Indoor hot springs pool in a wood-paneled bathhouse at 4UR Ranch, Creede, Colorado
Resort & lodging

4UR Ranch

Creede, CO

A historic guest ranch near Creede at the old Wagon Wheel Gap hot springs, offering natural hot springs and a geothermally heated pool to its guests. Stays are packaged with fly fishing, riding and children's programs. There is no public day access.

Overnight guestsView
Desert campground among cholla cactus below rocky mountains at Agua Caliente County Park, Julian, California
Day pools

Agua Caliente County Park

Julian, CA

A San Diego County camping park surrounded by Anza-Borrego Desert State Park, with three geothermally heated mineral pools: an indoor pool with age limits, an outdoor pool and a children's pool. The park is open from Labor Day weekend to Memorial Day and offers hookup sites, tent sites and seven cabins. Non-campers can use the pools for a small per-person fee.

From $7View
Entrance sign among shade trees at Alameda's Hot Springs Retreat, Hot Springs, Montana
Resort & lodging

Alameda's Hot Springs Retreat

Hot Springs, MT

A 1930s spa-motel in the town of Hot Springs whose suites have private in-room hot mineral baths, kitchens and sun porches. Soaking is for overnight guests only, and the retreat says outdoor soaking is not currently available on site. Same-day bookings are taken by phone rather than online.

Overnight guestsView
Small bathhouse shed on the desert flats below Steens Mountain at Alvord Hot Springs, Fields, Oregon
Resort & lodging

Alvord Hot Springs

Fields, OR

A privately owned soaking site on the east side of Steens Mountain at the edge of the Alvord Desert, with twin concrete pools fed by spring water that surfaces around 170°F. Caretakers run bunkhouses, campsites and a small general store, and a private road gives guests access to the playa. Overnight guests can soak at any hour; day visitors must call ahead.

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Stone-edged hot pool under a shade sail beside a log cabin at Antero Hot Springs Cabins, Nathrop, Colorado
Resort & lodgingClothing opt.

Antero Hot Springs Cabins

Nathrop, CO

Three rental cabins on Chalk Creek, each paired with its own hand-built private soaking pool fed by an on-site hot spring. There are no day passes; soaking comes with an overnight stay. The cabins sit between Mount Antero and Mount Princeton, about 15 minutes from Buena Vista.

Minerals234 mg/LSodium–sulfate · high silica
Overnight guestsView
Aerial view of the palm-lined pool and hot tubs at the hotel at Aqua Soleil Hotel & Mineral Water Pool, Desert Hot Springs, California
Resort & lodging

Aqua Soleil Hotel & Mineral Water Pool

Desert Hot Springs, CA

A hotel on Palm Drive with a large mineral water pool at about 88F and two jetted mineral pools at about 102F and 104F. The pools are for registered guests, who may bring up to four day guests. Dogs are allowed for a fee.

Overnight guestsView
Grand twin-towered historic hotel facade with flags at Arlington Resort Hotel & Spa (Thermal Bathhouse), Hot Springs, Arkansas
Resort & lodging

Arlington Resort Hotel & Spa (Thermal Bathhouse)

Hot Springs, AR

A historic hotel at the north end of Bathhouse Row with a Thermal Bathhouse on the third floor, where park spring water is piped into private baths. The one-hour Thermal Mineral Bath includes a dry sauna and wraps, and packages add massage or facials. The hotel also has cascading outdoor pools for guests from March through October.

From $45View
Soaker under a small waterfall in a rock grotto pool at Avalanche Ranch Cabins & Hot Springs, Redstone, Colorado
Resort & lodging

Avalanche Ranch Cabins & Hot Springs

Redstone, CO

A cabin ranch in the Crystal River Valley south of Carbondale with three tiered natural pools, the largest fed by a small waterfall in front of a rock grotto. Day visitors book 4-hour slots in advance, while cabin and wagon guests have round-the-clock access. Pools are drained and cleaned every Wednesday.

From $34View
Woman resting on the edge of a concrete mineral pool at Azure Palm Hot Springs Resort & Day Spa Oasis, Desert Hot Springs, California
Resort & lodging

Azure Palm Hot Springs Resort & Day Spa Oasis

Desert Hot Springs, CA

A resort and day spa with a 100 by 40 ft mineral pool and four indoor and outdoor hot spas kept at about 99-104F. The Oasis Day Pass covers the pools, sauna, lounging areas and yoga studio from 9am to 7pm. Guests must be 17 or older.

Minerals1,090 mg/LSodium–sulfate
From $79View
Aerial view of the pool building among cottonwoods in a canyon at Banbury Hot Springs, Buhl, Idaho
Resort & lodging

Banbury Hot Springs

Buhl, ID

A century-old resort on the Snake River near Buhl with a large geothermal swimming pool, adjusted seasonally from about 89F in summer to about 102-104F in winter. Five private hot tubs overlooking the river are booked in 90-minute sessions. The site also has a campground and a dry Queen Cabin.

Minerals358 mg/LSodium–chloride · high silica
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Resort & lodgingSeasonal

Bashford's Hot Mineral Spa

Niland, CA

A seasonal RV park near Niland with six mineral baths, a heated pool and a heated jacuzzi. Its website lists day use at $15 per person from 10am to 4pm and an Oct 15 to May 15 season, but the rates page carries a 2014 date.

Minerals3,290 mg/LSodium–chloride
From $15View
Outdoor pools, cabanas and water slide tower on green lawns at Bear River Hot Springs, Preston, Idaho
Resort & lodging

Bear River Hot Springs

Preston, ID

Formerly Riverdale Resort, this family hot springs about five miles north of Preston has four pools. The Hot Tub runs about 105F and the 3.5-ft-deep Peanut Pool 85-95F year-round, while two Hydrotube slides and a Junior Olympic pool open Memorial Day to Labor Day. Lodging includes eight hotel rooms, three cabins, a condo and RV and tent sites.

Minerals1,110 mg/LSodium–chloride · high silica
From $15View
Steaming outdoor pool beside the lodge in the forest at Belknap Hot Springs Lodge & Gardens, McKenzie Bridge, Oregon
Resort & lodging

Belknap Hot Springs Lodge & Gardens

McKenzie Bridge, OR

A lodge on the McKenzie River with two hot spring soaking pools, gardens, cabins and tent and RV sites. Walk-in visitors pay $12 for one hour in the lower pool; the upper pool is reserved for overnight guests. Children under 5 are not allowed in the pool area.

Minerals2,450 mg/LSodium–chloride · high silica
From $12View
Aerial view of the spring-fed pond in green fields at Belmont Hot Springs RV Park, Garland, Utah
Day pools

Belmont Hot Springs RV Park

Garland, UT

An RV park near Garland in Box Elder County built around two natural hot spring lakes, listed at 97°F and 104°F and also known as Udy Hot Springs. A hot springs access pass is sold to non-campers, and scuba diving is offered October through May by reservation. Pets are welcome in the park but not in the springs.

Minerals8,420 mg/LSodium–chloride
From $15View
Garden courtyard with a fountain in front of a long green-roofed inn at Benton Hot Springs (The Inn at Benton Hot Springs), Benton, California
Resort & lodgingClothing opt.

Benton Hot Springs (The Inn at Benton Hot Springs)

Benton, CA

A historic ranch and inn in the old mining town of Benton, where spring water rising at about 140°F feeds private hot tubs at numbered campsites, Inn tubs and rental houses. Every tub is booked overnight; the inn offers no day use or hourly rentals. Tub sites take tents or RVs without hookups, and clothing is optional at the sites with discretion required.

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Tiled soaking pool in a walled courtyard at Blackstone Hotsprings, Truth or Consequences, New Mexico
Resort & lodging

Blackstone Hotsprings

Truth or Consequences, NM

A remodeled motor court in the T or C hot springs district whose TV-themed rooms each have an in-room hot spring tub. Walk-in bathers can book three private outdoor baths or the Wet Room, a large indoor pool with a geothermal steam room and waterfall, in 45-minute sessions. Baths are for ages 12 and up, and pets are not allowed.

Minerals2,635 mg/LSodium–chloride
From $35View
Wild spring

Boiling Springs

Crouch, ID

A geothermal area on the Middle Fork Payette River about 24 miles north of Crouch on Forest Road 698, next to a Forest Service campground and the rentable Boiling Springs Cabin. Recreation.gov describes soaking in the hot springs beside the cabin, and the USFS says the springs are a short walk from the trailhead parking. The main spring is near boiling, so test the water before getting in.

Minerals263 mg/LSodium–chloride · high silica
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Steaming outdoor pool beside the hotel in the evergreen forest at Bonneville Hot Springs Resort & Spa, North Bonneville, Washington
Resort & lodging

Bonneville Hot Springs Resort & Spa

North Bonneville, WA

A Columbia River Gorge resort in North Bonneville with an indoor mineral-fed pool and hot tub, an outdoor hot tub, cold plunges and a sauna. Non-guests can buy one- or two-hour passes online or at the door, and the spa offers mineral baths in a shared bathhouse with private partitions. Some guest rooms have private hot tubs filled with untreated spring water.

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Aerial view of the historic hotel and wetlands in a valley at Boulder Hot Springs Inn, Spa & Retreat Center, Boulder, Montana
Resort & lodging

Boulder Hot Springs Inn, Spa & Retreat Center

Boulder, MT

A historic inn and retreat center 3 miles from Boulder in the Elkhorn Mountain foothills, run as an alcohol-, drug- and smoke-free property. Day passes cover an outdoor pool kept at about 96-100F and indoor plunges and steam rooms, with separate women-only and co-ed sides. The indoor hot plunges are continuous-flow without harsh chemicals, while the outdoor pool uses bromine.

From $12View
Hot tubs on wooden decks below red canyon walls at Box Canyon Lodge & Hot Springs, Ouray, Colorado
Resort & lodging

Box Canyon Lodge & Hot Springs

Ouray, CO

A small historic lodge near Box Cañon Falls in Ouray where spring water from the hillside fills seven red-cedar soaking tubs before draining to the Uncompahgre River. The tubs are presented as an amenity for lodge guests. The property dates back to a 1920s sanitarium.

Minerals1,715 mg/LCalcium–sulfate
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Soaker in a rock-ringed meadow pool beside a wooden gazebo at Breitenbush Hot Springs, Detroit, Oregon
Resort & lodgingClothing opt.

Breitenbush Hot Springs

Detroit, OR

An off-grid retreat center in the Willamette National Forest east of Detroit, with meadow pools, spiral tubs and a sauna fed by hot springs. Day passes run 9am to 6pm and often sell out weeks ahead; overnight guests get meals and 24-hour soaking. The property is substance-free, fragrance-free and has no cell service.

Minerals2,554 mg/L
From $40View
Snow-covered creek and pines in a mountain meadow at Burgdorf Hot Springs, McCall, Idaho
Resort & lodging

Burgdorf Hot Springs

McCall, ID

A historic off-grid resort in the Payette National Forest, about 30 miles north of McCall on Warren Wagon Road, with three log-sided, gravel-bottomed pools. Day soaks are booked in two-hour blocks, and the rustic cabins have no electricity or plumbing. In winter the road becomes a groomed snowmobile trail, so guests arrive by snowmobile or tracked vehicle.

Minerals189 mg/LSodium–sulfate · high silica
From $20View
Shaded mineral pool with curving steps and palm trees at Caliente Springs Resort, Desert Hot Springs, California
Resort & lodging

Caliente Springs Resort

Desert Hot Springs, CA

A 55-and-over RV resort on Dillon Road with natural hot mineral pools and spas, including a tub at about 104F, plus a sauna. The source water rises at 115-146F. The pools are for resort guests, and no day pass is published.

Minerals1,245 mg/LSodium–sulfate
Overnight guestsView
Guest with a bicycle outside the retro motor lodge rooms at Calistoga Motor Lodge and Spa, Calistoga, California
Resort & lodging

Calistoga Motor Lodge and Spa

Calistoga, CA

A retro-styled motor lodge at the north end of Lincoln Avenue, now part of JdV by Hyatt, with outdoor pools and a hot tub filled with mineral water from Calistoga's geothermal springs. MoonAcre Spa on site offers mud baths and massage. Day passes are sold through ResortPass.

Minerals668 mg/LSodium–chloride · lithium · high silica
From $56View
Lap pool and lounge chairs with Napa Valley hills behind at Calistoga Spa Hot Springs, Calistoga, California
Resort & lodging

Calistoga Spa Hot Springs

Calistoga, CA

A downtown Calistoga resort built around four outdoor pools filled with geothermal mineral water from a well beneath the property, ranging from about 80 to 104°F. The covered, jetted octagonal Jet Pool is adults only. Pools are for room guests and people booking spa treatments, which include traditional volcanic ash mud baths.

Minerals646 mg/LSodium–chloride · lithium · high silica
Overnight guestsView
Aerial view of the resort buildings in a forested valley at Carson Hot Springs Resort, Carson, Washington
Resort & lodgingClothing opt.

Carson Hot Springs Resort

Carson, WA

A long-running mineral springs resort on the Wind River at Carson, where the historic bathhouse offers soaks in clawfoot tubs of unchlorinated mineral water followed by a wrap. A chlorinated 104°F therapy pool with a small cold plunge is sold as a two-hour day pass, and all soaking areas are for adults 18 and older. The property also has hotel rooms, an 18-hole golf course and a clubhouse restaurant.

From $12View
Aerial view of the palm-shaded historic resort and pool in the desert foothills at Castle Hot Springs, Morristown, Arizona
Resort & lodging

Castle Hot Springs

Morristown, AZ

An adults-only, all-inclusive resort in the desert foothills northwest of Phoenix, reached by a 7-mile dirt road. Three natural-floored spring pools step down from the source at about 104-108°F, 98-102°F and 75-90°F, the last a 9-ft-deep swimming hole. The springs and spa are for registered overnight guests only, and swimwear is required.

Minerals749 mg/LSodium–sulfate · high silica
Overnight guestsView
Soakers in an indoor mineral pool under round skylights at Catalina Spa & RV Resort, Desert Hot Springs, California
Resort & lodging

Catalina Spa & RV Resort

Desert Hot Springs, CA

A gated RV resort with odorless hot mineral pools and hot tubs across five swimming areas at its Lower and Upper Clubhouses. RV sites start at $45 a night. The pools are for registered guests, and an ADA pool lift is available.

Minerals1,410 mg/LSodium–sulfate
Overnight guestsView
Tiled indoor soaking tub with black-and-white walls at Charles Motel & Hotsprings, Truth or Consequences, New Mexico
BathhouseClothing opt.

Charles Motel & Hotsprings

Truth or Consequences, NM

A historic downtown motel and bathhouse with individual deco-tiled meditation tubs and a larger indoor group tub, all drained and cleaned between users. Mineral water comes from the property's wells at about 111°F, and cool water is available to adjust it. Walk-ins pay by the hour and motel guests use the meditation tubs free; the rooftop tubs are closed for renovation.

Minerals2,635 mg/LSodium–chloride
From $14View
Steaming outdoor rock lake surrounded by snow-covered trees at Chena Hot Springs Resort, Fairbanks, Alaska
Resort & lodging

Chena Hot Springs Resort

Fairbanks, AK

A year-round resort at the end of Chena Hot Springs Road northeast of Fairbanks, built around an outdoor hot springs lake of about 106°F that is open only to guests 18 and over. The Pool House also has an indoor family pool and indoor and outdoor hot tubs, and day passes need no hotel stay. The resort has lodge rooms, cabins, summer camping and the Aurora Ice Museum.

Minerals372 mg/LSodium–sulfate · high silica
From $20View
Green-roofed historic lodge below a mountain peak at Chico Hot Springs Resort & Day Spa, Pray, Montana
Resort & lodging

Chico Hot Springs Resort & Day Spa

Pray, MT

A historic resort in Paradise Valley whose main lodge opened in 1900, about 23 miles south of Livingston on US 89. Two open-air mineral pools average about 96F (large pool) and 103F (small pool), with no added chemicals. Day passes are sold alongside lodge rooms, cabins, a dining room, saloon and day spa.

Minerals259 mg/LCalcium–sulfate
From $14View
Round stone-rimmed outdoor pool under a cottonwood at Chinati Hot Springs, Ruidosa, Texas
Resort & lodging

Chinati Hot Springs

Ruidosa, TX

A remote cabin retreat on warm mineral springs near Ruidosa in the Chihuahuan Desert, once owned by artist Donald Judd. Soaking is for overnight guests only, in outdoor hot and cool pools and private tubs at some cabins. There is no Wi-Fi or cell service, and guests bring their own food because the nearest store is in Presidio, about an hour away.

Overnight guestsView
Woman floating in a rock-lined pool at Cottonwood Hot Springs Inn & Spa, Buena Vista, Colorado
Resort & lodging

Cottonwood Hot Springs Inn & Spa

Buena Vista, CO

A rustic inn west of Buena Vista with soaking tubs fed by artesian hot springs, a river cold plunge and a dry sauna. Day soaks are walk-in friendly and swimsuits are required. Lodge rooms and cabins include soaking access.

Minerals370 mg/LSodium–sulfate · high silica
From $45View
Steaming pond and water spout at sunset at Crystal Crane Hot Springs, Burns, Oregon
Resort & lodging

Crystal Crane Hot Springs

Burns, OR

A high-desert resort on Highway 78 east of Burns built around an open-air hot springs pond of about 9,700 square feet that averages 101°F and is about 5 feet deep in the center. Cedar-enclosed private tubs with adjustable natural hot water taps are also available. Lodging ranges from cabins and suites to teepees, a sheepherder's wagon, RV sites and dry camping.

Minerals501 mg/LSodium–bicarbonate
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Historic stone building with a state historical marker at David Walley's Resort, Genoa, Nevada
Resort & lodging

David Walley's Resort

Genoa, NV

A Holiday Inn Club Vacations resort at the foot of the Sierra Nevada, 1.5 miles from Genoa, on a hot springs site developed in the 1860s. Day visitors pay one fee for the mineral spas (98-104°F), a geothermally heated swimming pool, steam rooms and dry saunas. Lodging ranges from studios to three-bedroom cottages, and the 1862 Restaurant & Saloon is on site.

Minerals536 mg/LSodium–sulfate · high silica
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Outdoor mineral pool with a desert valley view at Death Valley Hot Springs, Tecopa, California
Resort & lodging

Death Valley Hot Springs

Tecopa, CA

A Tecopa Hot Springs Road resort with a large outdoor geothermal pool ringed by four smaller hot pools of different sizes and temperatures. Four private pools with their own showers are also offered, and everyone on the property needs a $35 guest pass, valid 9am-10pm. Lodging is in bungalows, with an RV park and tent sites.

Minerals2,020 mg/LSodium–bicarbonate · high silica
From $35View
Pool and lit pavilion at night at Deer Valley Hot Springs Ranch, Nathrop, Colorado
Resort & lodging

Deer Valley Hot Springs Ranch

Nathrop, CO

A cabin and lodge ranch in Chalk Creek Canyon whose pool and hot tubs are filled with hot spring water and treated for cleanliness. The pools are for ranch guests and open 9 am to 9 pm year-round, closing early on Mondays for cleaning. Sport courts and trails are on the property.

Minerals143 mg/LSodium–sulfate
Overnight guestsView
Palm trees reflected in the hotel's main pool at Desert Hot Springs Spa Hotel, Desert Hot Springs, California
Resort & lodging

Desert Hot Springs Spa Hotel

Desert Hot Springs, CA

A mid-century hotel on Palm Drive, operating since 1950, built around a courtyard of natural hot mineral pools. It sells pool day passes for 9am-8pm and runs a cafe, bar and spa on site. The hotel's day-pass page and its FAQ disagree on price and minimum age, so confirm before visiting.

Minerals985 mg/LSodium–sulfate
From $15View
Stone-edged pools with a shade structure on open plains at Desert Reef Hot Springs, Florence, Colorado
Resort & lodgingTemporarily closedClothing opt.

Desert Reef Hot Springs

Florence, CO

An adults-only, suits-optional geothermal soaking spot in the high desert near Florence, with overnight stays in vintage Airstreams, tiny homes or van campsites. Swimsuits are required on Friday daytimes, and some hours are reserved for members. It was temporarily closed for day soaks at time of check (Oct 19-Nov 10, 2026).

Minerals1,520 mg/LSodium–sulfate
Call for pricesView
Large Downata Hot Springs sign among autumn trees at Downata Hot Springs, Downey, Idaho
Resort & lodging

Downata Hot Springs

Downey, ID

A family resort south of Downey built around a 112F spring that gravity-feeds a 1929 flow-through recreation pool and separate unchlorinated hot soaking pools. Summer adds water slides, a hot tub and a water playground. Lodging ranges from yurts and cabins to large houses and a campground.

Minerals266 mg/LCalcium–chloride
From $12View
Overhead view of a swimmer in the mineral pool at Dr. Wilkinson's Backyard Resort & Mineral Springs, Calistoga, California
Resort & lodging

Dr. Wilkinson's Backyard Resort & Mineral Springs

Calistoga, CA

Calistoga's resort and spa running since 1952 on Lincoln Avenue, with three geothermal mineral pools, one indoor and two outdoor, set at about 85, 95 and 104°F. The 104°F Hot Spring is adults only. Day visitors can buy pool passes, daybeds and cabanas through ResortPass, and the spa still offers its original mud bath, The Works.

Minerals676 mg/LSodium–chloride · lithium · high silica
From $90View
Red cabins along the edge of a pine forest meadow at Drakesbad Guest Ranch, Chester, California
Resort & lodgingTemporarily closed

Drakesbad Guest Ranch

Chester, CA

A historic guest ranch in Warner Valley in the southeast corner of Lassen Volcanic National Park, reached by a partly gravel road from Chester. Guests stay in lodge rooms, cabins or bungalows with all meals included, and guided rides go to Boiling Springs Lake and Devils Kitchen. The ranch's pool has not reopened since the 2021 Dixie Fire, and the operator says it is still in the planning stages.

Minerals588 mg/LCalcium–chloride
Overnight guestsView
Indoor hot pool in a historic log bathhouse with large windows at Dunton Hot Springs, Dolores, Colorado
Resort & lodging

Dunton Hot Springs

Dolores, CO

A restored 19th-century mining town in the San Juan Mountains turned into a small luxury retreat with 14 cabins. Guests share a historic bathhouse and outdoor pools fed by natural hot springs, with daily slots for private bathhouse use. It is open year-round to overnight guests only.

Minerals1,300 mg/LCalcium–sulfate
Overnight guestsView
Rustic wooden fence and desert garden at the soaking area at El Dorado Hot Spring, Tonopah, Arizona
Day poolsClothing opt.

El Dorado Hot Spring

Tonopah, AZ

A rustic soaking spot west of Phoenix in Tonopah with reservable private soaking areas and a communal, clothing-optional area called Desert Pete for guests 21 and over. Two studios with their own soaking areas and first-come primitive and electric campsites allow overnight stays. Phones are not allowed in the Desert Pete pool area.

Minerals744 mg/LSodium–chloride
From $20View
Moroccan-style inn and pool lit up at night beside a fire at El Morocco Inn & Spa, Desert Hot Springs, California
Resort & lodging

El Morocco Inn & Spa

Desert Hot Springs, CA

A small Moroccan-themed inn for adults 21 and over, with a natural mineral-water swimming pool and a large covered Jacuzzi-style spa. Day visitors can book a pass that includes two far-infrared saunas, a locker, towel and robe. There is no restaurant, and guests may bring their own food and drinks.

Minerals706 mg/LSodium–sulfate
From $50View
Resort & lodging

Elkhorn Hot Springs

Polaris, MT

A remote resort in the Pioneer Mountains of the Beaverhead-Deerlodge National Forest, about 40 miles northwest of Dillon, with two outdoor mineral pools and a Grecian sauna. Lodging includes rustic and modern cabins and lodge rooms, and groomed cross-country ski trails start nearby. After closing during the 2026 Sand Creek Fire it has reopened for pools only, Thursday through Sunday.

Minerals182 mg/LSodium–sulfate · high silica
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Clifftop lawns and baths above the Big Sur coast at Esalen Institute, Big Sur, California
Resort & lodgingClothing opt.

Esalen Institute

Big Sur, CA

A retreat center on the Big Sur cliffs whose hot springs baths sit above the Pacific, fed by springs that emerge at about 119F. The baths have four communal stone tubs, individual claw-foot tubs and an upper-level tub with a lift, and they are clothing-optional. They are open only to overnight guests, and Esalen's public night-bathing reservations are currently closed.

Overnight guestsView
Aerial view of the outdoor pools and cabanas at Fairmont Hot Springs Resort, Anaconda, Montana
Resort & lodging

Fairmont Hot Springs Resort

Anaconda, MT

A large resort between Butte and Anaconda with 152 rooms, golf, a spa and hot springs pools fed by a 600-ft well. Pools are open only to overnight resort and condo guests and members, not day visitors. Phase 1 of a pool renovation added an adults-only tiered soaking pool, a family soaking pool, a lap pool and a cold plunge; phase 2 is under construction.

Minerals574 mg/LSodium–sulfate · high silica
Overnight guestsView
Mineral pool lined with cabanas under redwood trees at Fairmont Sonoma Mission Inn & Spa, Sonoma, California
Resort & lodging

Fairmont Sonoma Mission Inn & Spa

Sonoma, CA

A large resort at Boyes Hot Springs, just north of Sonoma, built over thermal mineral springs. The adults-only Fairmont Spa has five geothermal mineral pools and a Roman-style bathhouse, while the family Main Resort Pool is also filled with naturally heated geothermal water and open year-round. Day visitors can book treatments or a spa pass through ResortPass.

Minerals1,220 mg/LSodium–chloride · lithium · high silica
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Curved concrete soaking pool with mineral-tinted water at Faywood Hot Springs, Faywood, New Mexico
Resort & lodgingClothing opt.

Faywood Hot Springs

Faywood, NM

A rustic, gated geothermal resort between Deming and Silver City with separate clothing-required and clothing-optional public pools, four private pools and a group pool. Everyone needs a confirmed, prepaid reservation, and first-time visitors must arrive by 8 pm for orientation. Lodging includes cabins, RV sites and tent camping.

Minerals384 mg/LSodium–sulfate
Call for pricesView
Concrete soaking tubs beside a snowy river at sunset at Feather River Hot Springs, Twain, California
Resort & lodgingTemporarily closed

Feather River Hot Springs

Twain, CA

A small, rustic private campground and cabin site on the Feather River off Highway 70 near Twain, with two riverside tubs at 99 to 104F. Soaks are booked by text in two-hour slots, swimsuits are required, and children are not allowed at the springs. The operator has posted that the springs and all lodging are temporarily closed for medical reasons.

From $20View
Turquoise motel courtyard with palms and a stone fountain at Fire Water Lodge, Truth or Consequences, New Mexico
Resort & lodging

Fire Water Lodge

Truth or Consequences, NM

A restored 1920s motor court lodge in the T or C bathhouse district where each guest room has its own private geothermal mineral tub. The lodge says the water reaches the tub at 104-108°F. Baths are for lodgers only.

Minerals2,635 mg/LSodium–chloride
Overnight guestsView
Long mineral pool and palms at dusk at Fountain of Youth Spa & RV Resort, Niland, California
Resort & lodging

Fountain of Youth Spa & RV Resort

Niland, CA

An RV resort and villa park near the Salton Sea whose signature Lobster Pot raw mineral spa runs at about 100-104F. There are also three private soaking tubs with adjustable temperatures and separate mineral steam rooms. The pools are included for registered guests.

Minerals4,650 mg/LSodium–chloride · high silica
Overnight guestsView
Ranch buildings among cottonwoods in a mountain valley at Gila Hot Springs Ranch, Gila Hot Springs, New Mexico
Resort & lodging

Gila Hot Springs Ranch

Gila Hot Springs, NM

A family-run ranch in the hamlet of Gila Hot Springs, 4 miles south of Gila Cliff Dwellings, with apartments, a historic cabin, an RV park and tent sites. The ranch has a natural hot springs jacuzzi, and its lodgings and RV hookups are piped with hot spring water. NM 15 from Silver City is about 2 hours of winding road; rigs over 20 ft should use NM 35.

Minerals421 mg/LSodium–chloride · high silica
Call for pricesView
Huge outdoor hot springs pool in a canyon town with autumn colors at Glenwood Hot Springs Resort, Glenwood Springs, Colorado
Resort & lodging

Glenwood Hot Springs Resort

Glenwood Springs, CO

A large downtown resort built around the Grand Pool, which stretches more than two city blocks, plus a 104°F therapy pool. The newer Yampah Mineral Baths add three hot pools between roughly 95 and 104°F and two cold-contrast baths, and that area turns adults-only after 5 pm. Day passes are sold without reservations, and the resort runs two hotels on site.

Minerals20,250 mg/LSodium–chloride
From $42View
Guests relaxing in volcanic ash mud baths at Golden Haven Hot Springs Spa and Resort, Calistoga, California
Resort & lodging

Golden Haven Hot Springs Spa and Resort

Calistoga, CA

A family-owned spa and lodge on a residential street near downtown Calistoga, using mineral water from a geothermal aquifer beneath the property. Its gated, partly covered pool runs about 85-88°F, with two adjoining hot spas at 98-100°F and 102-104°F. There is no day use; the pool comes with a stay or any spa treatment, including shared couples mud baths.

Minerals668 mg/LSodium–chloride · lithium · high silica
Overnight guestsView
Outdoor pool and hot tub on a lawn at Grande Hot Springs RV Resort, La Grande, Oregon
Resort & lodgingTemporarily closed

Grande Hot Springs RV Resort

La Grande, OR

An RV park beside Hot Lake Springs Resort with warm (92-96F) and hot (102-104F) mineral pools for registered guests, plus two yurts with private soaking. The pools run April-September and closed on October 3, 2026 for winter upgrades. It shares owners with Hot Lake Springs Resort.

Overnight guestsView
Pool beside a blue building with stained-glass windows in the hills at Harbin Hot Springs, Middletown, California
Resort & lodgingClothing opt.

Harbin Hot Springs

Middletown, CA

A rustic, clothing-optional retreat center north of Middletown run by the non-profit Heart Consciousness Church, with eight Mainside pools ranging from a very hot enclosed pool to cold plunges, plus a sauna and steam room. Visitors buy a membership and a 3-, 6- or 24-hour pass, and the property bans alcohol, drugs, phones and cameras. Rebuilding after the 2015 Valley Fire continues, with two new Mainside hotels under construction.

From $25View
Resort & lodgingClothing opt.

Haven Hot Springs

Lowman, ID

A roadside stop on Highway 21 near Kirkham with a 1951 pool, about 75 by 30 feet, fed by flowing thermal water and hotter on one side (101-104°F) than the other (85-98°F). The pool is booked as a private soak by the hour, and each of the four motel rooms has its own soaking tub. RV and tent sites are on site.

Minerals247 mg/LSodium–sulfate · high silica
From $20View
Families swimming in the outdoor mineral pool at Healing Waters Resort & Spa, Pagosa Springs, Colorado
Resort & lodging

Healing Waters Resort & Spa

Pagosa Springs, CO

A family-owned motel resort in Pagosa Springs, run by the same family since 1950, with a large outdoor mineral swimming pool, a hot tub and separate men's and women's indoor baths. Day soaking is walk-in. The pools use untreated mineral water.

Minerals3,320 mg/LSodium–sulfate · lithium · high silica
From $25View
Outdoor pool with a lifeguard stand in front of the lodge at Heise Hot Springs, Ririe, Idaho
Resort & lodging

Heise Hot Springs

Ririe, ID

A family resort on the South Fork Snake River east of Ririe with a hot mineral pool kept around 104°F and a summer swimming pool with a 350-ft water slide. The grounds include cabins, RV campgrounds, a golf course and a pizza parlor. The resort was evacuated during the August 2026 Big Rock Fire and has since reopened.

Minerals5,945 mg/LSodium–chloride
Call for pricesView
Brick historic hotel on the town's main street at Home Hotel Lava Hot Springs, Lava Hot Springs, Idaho
Resort & lodging

Home Hotel Lava Hot Springs

Lava Hot Springs, ID

A family-run hotel on Main Street dating to 1918, originally called the Raya Hotel. Most rooms have private baths filled with natural hot springs water. It sits within walking distance of the state-run Hot Pools.

Minerals790 mg/LSodium–chloride
Overnight guestsView
Swimmers on the deck inside the domed limestone crater at Homestead Crater, Midway, Utah
Resort & lodging

Homestead Crater

Midway, UT

A geothermal spring inside a beehive-shaped limestone dome on the Homestead Resort grounds in Midway, entered through a ground-level tunnel. The water is about 90-96°F and roughly 65 feet deep, so life vests are required for everyone except certified divers. Soaks are sold in one-hour slots with about 40 minutes in the water.

Minerals2,020 mg/LCalcium–sulfate
From $30View
Private soaking tub in a lantern-lit courtyard at Hoosier Hot Springs & Inn, Truth or Consequences, New Mexico
Resort & lodging

Hoosier Hot Springs & Inn

Truth or Consequences, NM

An adults-only 1937 inn in downtown T or C, revitalized in 2026, with four private soaking spaces: three walled outdoor pools and the original indoor bath. Untreated, unheated mineral water flows in at about 104°F and drains back to the Rio Grande, and each pool is drained and cleaned between reservations. Inn guests get a free 1-hour soak per night.

Minerals2,635 mg/LSodium–chloride
From $30View
Mid-century lounge with a sunken fire pit and glass walls at Hope Springs Resort, Desert Hot Springs, California
Resort & lodging

Hope Springs Resort

Desert Hot Springs, CA

A small adults-only (21+) motel-style retreat with three pools fed by an on-site hot mineral well: an ambient swimming pool, a 92°F pool and an enclosed 104°F pool. The pools are for overnight guests only. Rooms have no TVs, and the resort asks for quiet voices and no phone calls around the pools.

Minerals1,250 mg/LSodium–sulfate
Overnight guestsView
Aerial view of the brick hotel and soaking tubs beside the marsh at Hot Lake Springs Resort, La Grande, Oregon
Resort & lodging

Hot Lake Springs Resort

La Grande, OR

A restored 1906 lodge on Hot Lake outside La Grande with nine outdoor mineral pools, including a historic brick pool and a rock pool, plus a 40-45F cold plunge. Day soaks need an online reservation and cost $20 Monday-Thursday or $29 Friday-Sunday. Children 11 and under are not allowed in the soaking area.

From $20View
Two guests relaxing in a stock-tank hot tub at Hot Springs Glamp Camp, Truth or Consequences, New Mexico
Resort & lodging

Hot Springs Glamp Camp

Truth or Consequences, NM

A small private RV park and glamping compound in the T or C hot springs district with remodeled vintage trailers, a yurt and a dome. Overnight guests can use three outdoor multi-person mineral baths and one indoor single bath at any hour; the county lists water at about 107-109°F. Baths are for guests only.

Minerals2,635 mg/LSodium–chloride
Overnight guestsView
Soaker resting in a steaming outdoor tub at Hot Springs Resort & Spa, Hot Springs, North Carolina
Resort & lodging

Hot Springs Resort & Spa

Hot Springs, NC

North Carolina's only hot springs resort, on the banks of Spring Creek and the French Broad River in the Appalachian Trail town of Hot Springs. Natural hot mineral water is piped to private outdoor tubs rented by the hour for up to five people, each drained and cleaned after every use. The resort is rebuilding after Hurricane Helene destroyed most of its tubs and lodging in 2024, so fewer tubs and rooms are available.

From $50View
Lodge building with balconies against a hillside at Hot Sulphur Springs Resort & Spa, Hot Sulphur Springs, Colorado
Resort & lodging

Hot Sulphur Springs Resort & Spa

Hot Sulphur Springs, CO

A long-running hillside resort in the town of Hot Sulphur Springs with about 19 public mineral pools between 98 and 112°F. Day passes are walk-in only, and some pools are restricted to ages 12 and up. The property also has a motel, private baths, massage and a grill.

Minerals1,190 mg/LSodium–chloride · lithium
From $30View
Cream Spanish-style bathhouse building with arched windows and red tile roof at Hotel Hale, Hot Springs, Arkansas
Resort & lodging

Hotel Hale

Hot Springs, AR

A nine-suite boutique hotel in the 1892 Hale Bathhouse, the oldest building on Bathhouse Row. Every suite has a large soaking tub filled with thermal water piped from the park's springs, so soaking is for overnight guests only. The ground floor holds Eden, a restaurant with a living wall and full bar.

Minerals195 mg/LCalcium–bicarbonate
Overnight guestsView
Outdoor pool between shingled buildings under a blue sky at Hunter's Hot Springs Resort, Lakeview, Oregon
Resort & lodging

Hunter's Hot Springs Resort

Lakeview, OR

A small resort just north of Lakeview beside Old Perpetual, a geyser that erupts from the hot springs here. It has one outdoor mineral pool kept at about 104°F, open to day visitors Tuesday to Sunday afternoons. Twelve rooms, RV dry sites and tent camping are on site, along with The Geyser Room restaurant and bar.

From $10View
Wood-decked pool in a meadow below sagebrush hills at Idaho Rocky Mountain Ranch, Stanley, Idaho
Resort & lodgingSeasonal

Idaho Rocky Mountain Ranch

Stanley, ID

A guest ranch in the Sawtooth National Recreation Area south of Stanley with a 20 by 40 foot pool fed by a hot spring piped across the Salmon River. The pool is kept at 99-104°F and is open only to ranch guests. The ranch runs a summer season; 2027 dates are June 11 to September 9.

Minerals202 mg/LSodium–sulfate · high silica
Overnight guestsView
Swimmers in a geothermal pool under a glass dome at Indian Hot Springs, Idaho Springs, Colorado
Resort & lodging

Indian Hot Springs

Idaho Springs, CO

A historic spa in Idaho Springs with separate men's and women's geothermal cave baths, a mineral-water swimming pool and private tubs. Lodging, a restaurant and spa services are on site. Prices and cave rules should be confirmed directly, as public listings conflict.

Minerals1,990 mg/LSodium–sulfate · high silica
Call for pricesView
Bathhouse

Indian Springs

Truth or Consequences, NM

A bathhouse and cottages, formerly the Langford Tourist Courts, whose two baths built in 1927 from wood, redwood and lava rock have gravel bottoms with natural artesian flow. Walk-in bathers are taken first come, first served. Facts come from the county tourism listing, as the business has no website.

Minerals2,635 mg/LSodium–chloride
From $5View
Palm-lined entrance drive with flags at Indian Springs Calistoga, Calistoga, California
Resort & lodging

Indian Springs Calistoga

Calistoga, CA

A historic Calistoga resort whose Olympic-size Main Pool, built in 1913, is fed by mineral water from on-site geysers that surfaces around 230°F and is cooled in reservoirs. A smaller Adult Pool sits next door and runs about ten degrees cooler than the Main Pool. Hotel guests use the pools; day visitors need a spa booking plus a pool pass.

Minerals646 mg/LSodium–chloride · lithium · high silica
Overnight guestsView
Outdoor pool beside the weathered timber lodge with string lights at Jackson Hot Springs Lodge, Jackson, Montana
Resort & lodging

Jackson Hot Springs Lodge

Jackson, MT

A rustic lodge in the Big Hole Valley town of Jackson with one outdoor hot springs pool at 100-106F that the lodge says uses no chemicals. Rooms, sleeper cabins and rental houses come with swim passes, and the pool is also open to the public. The pool, restaurant and lodge are closed Monday through Wednesday.

Minerals671 mg/LSodium–sulfate
From $12View
Large pool lit at night under a full moon at Jackson WellSprings, Ashland, Oregon
Resort & lodgingClothing opt.

Jackson WellSprings

Ashland, OR

A mineral springs retreat on 30 acres along Bear Creek, about 2.5 miles from downtown Ashland, with a 95-foot swimming pool, a hot tub, a sauna, a steam room and private tubs. The spring water arrives at about 103°F, and the venue says it uses no chlorine or bromine. Daytime sessions are family friendly; evening sessions are adults-only and clothing-optional.

Minerals315 mg/LSodium–chloride · high silica
From $15View
Mineral pool and lounge chairs under thatched umbrellas at Jacumba Hot Springs, Jacumba Hot Springs, California
Resort & lodging

Jacumba Hot Springs

Jacumba Hot Springs, CA

A hotel in the high desert town of Jacumba Hot Springs, about an hour east of San Diego, whose mineral spring water flows into its pools with no chemical treatment. Day passes cover the large outdoor Ritual Pool (96-101°F), with a limited-pass Solstice Pool and an indoor Echo Room (99-103°F) for hotel guests. Pool access is for ages 21 and over.

From $25View
Turquoise rock-edged pool under a pergola at Jemez Hot Springs, Jemez Springs, New Mexico
Day pools

Jemez Hot Springs

Jemez Springs, NM

Formerly Giggling Springs, this walk-in soaking spot in the village has four outdoor mineral pools kept at 98-105°F beside the Jemez River. Soaks are sold by the hour on a first-come basis, swimsuits are required, and visitors must be 14 or older. The pools use UV light instead of chemicals and are drained and cleaned every night.

Minerals2,170 mg/LSodium–chloride · high silica
From $25View
Soakers in a hot pool overlooking a mountain valley at Joyful Journey Hot Springs Spa, Moffat, Colorado
Resort & lodging

Joyful Journey Hot Springs Spa

Moffat, CO

A spa retreat near Moffat in the San Luis Valley, built on the historic Mineral Hot Springs site, with three main pools held at 98, 104 and 108°F plus jacuzzis and a cold plunge. Lodging ranges from hotel rooms to yurts, tipis and campsites. Leashed dogs are welcome on the grounds but not in the pool area.

Minerals661 mg/LSodium–sulfate
From $18View
Rendering of the pools with tepees and cabanas at Kah-Nee-Ta Hot Springs Resort, Warm Springs, Oregon
Resort & lodging

Kah-Nee-Ta Hot Springs Resort

Warm Springs, OR

A tribally owned resort on the Warm Springs Reservation that reopened in 2024 after a $13 million renovation. Mineral pools run about 92-104F, with kids' pools, a lazy river and a 37F cold plunge, plus hotel rooms, a teepee village and RV sites. Pools are closed Tuesdays and Wednesdays through March 2027.

Minerals1,020 mg/LSodium–chloride · high silica
From $34View
Resort & lodging

Keough's Hot Springs

Bishop, CA

A pool resort south of Bishop, open since 1919, where spring water is cooled by a waterfall into a large swimming pool alongside a smaller hot soaking pool. Day entry is $14 for adults. The property also has RV and tent sites and furnished canvas tent cabins, and Inyo County's visitor site notes that swimsuits are required.

From $14View
Garden courtyard with several small square soaking pools at Lava Hot Springs Inn & Spa, Lava Hot Springs, Idaho
Resort & lodging

Lava Hot Springs Inn & Spa

Lava Hot Springs, ID

A historic inn at the west end of Lava Hot Springs with outdoor mineral pools from 94 to 107F and a 44F cold plunge. Non-guests can buy a $15 all-day pass at the front desk, and overnight stays include pool access and a hot breakfast. Massages, including aquatic Watsu, are offered on site.

Minerals790 mg/LSodium–chloride
From $15View
Bright blue pool lined with tall palm trees at Lido Palms Resort and Spa, Desert Hot Springs, California
Resort & lodging

Lido Palms Resort and Spa

Desert Hot Springs, CA

A small inn on Tamar Drive with a 103°F outdoor hot tub, a 99°F indoor hot tub and a warm outdoor pool, all filled with mineral water pumped from the ground. Day passes cost $55 for visitors 18 and over and include the sauna, towels and robes. Swimwear is required, and rooms have full kitchens.

Minerals710 mg/LSodium–sulfate
From $55View
Guests at the edge of the garden pool by the inn at Lithia Springs Resort, Ashland, Oregon
Resort & lodging

Lithia Springs Resort

Ashland, OR

A hotel on West Jackson Road about 3 miles from downtown Ashland that pipes warm, sulfur-rich spring water to its rooms, many of which have private soaking tubs or mineral showers. The water surfaces at about 90°F and is aerated to release sulfur gas. Soaking is for overnight guests; there is also a seasonal saline pool, a Jacuzzi and a small spa.

Minerals315 mg/LSodium–chloride · high silica
Overnight guestsView
Lodge buildings below a rocky, pine-covered ridge in winter at Lolo Hot Springs Resort, Lolo, Montana
Resort & lodgingClothing opt.

Lolo Hot Springs Resort

Lolo, MT

A historic hot springs on US 12 in the Lolo National Forest, between the town of Lolo and the Idaho border. It has an indoor hot pool at about 103-106F and an outdoor pool at roughly 74-85F, plus a bar, restaurant, cabins and RV and tent sites. On Wednesday and Sunday nights from 9pm the pools are 18+ and clothing optional.

Minerals245 mg/LSodium–sulfate · high silica
From $16View
Red wooden cabin in the pine forest at Lost Trail Hot Springs Resort, Sula, Montana
Resort & lodging

Lost Trail Hot Springs Resort

Sula, MT

A family resort at the base of Lost Trail Pass in the upper Bitterroot Valley, on the site of the old Gallogly Hot Springs. A chemical-free 20 x 70 ft pool averages about 95F and is covered by a dome in colder months, alongside a 103-105F hot tub and a dry sauna. Lodges, cabins and an RV park and campground are on site; hours are limited outside July and August.

From $10View
Ponds in a valley of autumn hills at Maple Grove Hot Springs, Thatcher, Idaho
Resort & lodging

Maple Grove Hot Springs

Thatcher, ID

A 45-acre off-grid retreat on the Bear River at the north end of Oneida Narrows Reservoir. Six soaking pools, including three circular stone pools and a creek pool, run about 100-107F, fed from source ponds over 160F that are off-limits. Day visitors book 3-hour blocks; the site is alcohol-free, swimwear is required and pools go silent after sundown.

Minerals1,900 mg/LSodium–chloride · high silica
From $18View
Pool lined with red lounge chairs in front of the country house at Meadowlark Country House and Resort, Calistoga, California
Resort & lodgingClothing opt.

Meadowlark Country House and Resort

Calistoga, CA

An adults-only country inn on Petrified Forest Road outside Calistoga with a mineral-water lap pool, mineral hot tub and Finnish sauna. The inn says its well water is warmed by volcanic activity; the pool is seasonally heated and not heated in winter. The pool area is clothing-optional, and day visitors can call ahead for a day or evening pass.

From $50View
Cabins and palms in a dry golden valley at Mercey Hot Springs, Firebaugh, California
Resort & lodgingClothing opt.

Mercey Hot Springs

Firebaugh, CA

An off-grid resort in the Little Panoche Valley, 13 miles west of I-5, where salty mineral water emerges at about 112F. Outdoor tubs run 102-106F and are clothing-optional and adults-only, while the heated swimming pool is 85-90F and needs swimsuits. Day use is by reservation from noon to 5pm, and stays range from cabins and Airstreams to RV and tent sites.

Minerals2,275 mg/LSodium–chloride · high silica
From $50View
Steaming rock-edged pool in a snowy pine forest at Merrifield Homestead Cabins & Hot Springs, Buena Vista, Colorado
Resort & lodging

Merrifield Homestead Cabins & Hot Springs

Buena Vista, CO

Historic homestead cabins at 19320 County Road 306 west of Buena Vista, run by the same family as Charlotte Hot Springs. The family once rented soaks to miners here in the 1930s and still heats greenhouses with the geothermal water. Soaking arrangements and rates were not listed online.

Call for pricesView
Pool deck with lounge chairs and green umbrellas at Mi Kasa Hot Springs, Desert Hot Springs, California
Resort & lodgingClothing opt.

Mi Kasa Hot Springs

Desert Hot Springs, CA

A small adults-only (21+), clothing-optional hotel with a natural hot springs pool, an indoor jacuzzi at about 103F and an outdoor jacuzzi at about 100F. Day passes and private tub rentals run 9am to 10pm with single entry. Leashed pets are welcome but may not enter the water.

Minerals985 mg/LSodium–sulfate
Call for pricesView
Outdoor pool beside a stone-walled building with stairs at Miracle Hot Springs, Buhl, Idaho
Resort & lodging

Miracle Hot Springs

Buhl, ID

A geothermal soaking resort on Highway 30 near Buhl in the Hagerman Valley. Four outdoor pools are kept between 96 and 106F with no chlorine, and private open-roof pools can be booked by the hour. Overnight options include geodesic domes, a park home and RV sites, and reservations are required for all soaking.

Minerals392 mg/LSodium–chloride · high silica
From $14View
Mineral pool with a shade structure and desert mountain view at Miracle Manor Boutique Hotel & Spa, Desert Hot Springs, California
Resort & lodging

Miracle Manor Boutique Hotel & Spa

Desert Hot Springs, CA

A nine-room 1950s motel on Miracle Hill with a mineral water pool, a jacuzzi and private hot and cold mineral tubs. Day passes include pool access from 9am to 5pm, a yoga session and a locker, and reservations are required. The property is adults-only (21+) and pet-free.

Minerals1,090 mg/LSodium–sulfate
From $74View
Hot pool among palm trees and lawn at Miracle Springs Resort & Spa, Desert Hot Springs, California
Resort & lodging

Miracle Springs Resort & Spa

Desert Hot Springs, CA

A hotel and spa on Palm Drive with a courtyard of eight natural hot mineral pools, which Greater Palm Springs tourism describes as 140°F water cooled to 90-104°F. Day passes ($20, 21+) are walk-in only, and visitors should bring their own towel and a lock. The Capri Italian Restaurant serves poolside.

Minerals985 mg/LSodium–sulfate
From $20View
Soaker in a rock pool beside a mountain river at Mono Hot Springs Resort, Mono Hot Springs, California
Resort & lodgingSeasonal

Mono Hot Springs Resort

Mono Hot Springs, CA

A seasonal High Sierra resort on the South Fork San Joaquin River, reached over the narrow Kaiser Pass Road, with soaks in private bathhouse rooms and an outdoor mineral spa at about 100-104°F. Day bathhouse passes are $25 for adults, and stays in the stone, rustic and tent cabins include bathhouse use. The 2026 season ran May 22 to October 26.

From $25View
Pools and water slide below the pine hills at Mount Princeton Hot Springs Resort, Nathrop, Colorado
Resort & lodging

Mount Princeton Hot Springs Resort

Nathrop, CO

A large resort below the Chalk Cliffs between Buena Vista and Salida, with a historic bath house, terraced upper pools, an infinity pool and natural soaking spots along Chalk Creek. Day passes are walk-in, and summer adds twin water slides. An adults-only spa pool area is reserved for lodging guests and spa clients.

Minerals247 mg/LSodium–sulfate · high silica
From $40View
Historic two-story hotel facade on the main street at Mount View Hotel & Spa, Calistoga, California
Resort & lodging

Mount View Hotel & Spa

Calistoga, CA

A 1917 art deco hotel on Lincoln Avenue in downtown Calistoga with a day spa. Its mineral whirlpool and hydrotherapy tubs use water from the spa's own geothermal well, which surfaces at about 120°F, alongside a heated pool. Details could not be confirmed on the hotel's own site.

Minerals676 mg/LSodium–chloride · lithium · high silica
Overnight guestsView
Private rustic soaking room open to a Sawtooth Mountains view at Mountain Village Resort Hot Springs, Stanley, Idaho
Resort & lodging

Mountain Village Resort Hot Springs

Stanley, ID · 0.3 mi hike

Three spring-fed soaking tubs in buildings on Valley Creek, about a third of a mile walk from the Mountain Village Lodge in Stanley. The two private tubs book in 90-minute sessions and the shared Osprey tub in one-hour sessions, free for lodge guests. Water usually runs 98-104°F with no chemicals added.

Minerals211 mg/LSodium–sulfate · high silica
From $30View
Rustic wooden bathhouse with a stone-edged soaking pool at Muir Trail Ranch, Florence Lake, California
Resort & lodgingSeasonal

Muir Trail Ranch

Florence Lake, CA · 5 mi hike

A remote guest ranch in the John Muir Wilderness, reached by ferry across Florence Lake and a hike of about 5 miles, whose stays include use of its hot springs baths. Short stays include meals and run about $250-$285 per person per night. Accommodations closed for the season after September 7, 2026, and bookings are closed until 2027.

Overnight guestsView
Steaming hot pools and palms in front of white mission-style buildings at Murrieta Hot Springs Resort, Murrieta, California
Resort & lodging

Murrieta Hot Springs Resort

Murrieta, CA

A historic hot springs resort in Murrieta with lodging and more than 20 pools fed by geothermal spring water found on the property, posted at roughly 50°F to 104°F. Most pools use untreated mineral water, while the Blue Lagoon, Oasis, Roman Spa, Vitality Plunge and indoor bathhall are treated. Day passes are sold to families, with separate adults-only areas including a terrace with a panoramic sauna.

Minerals710 mg/LSodium–chloride · high silica
From $109View
Old bathtub set into an orange travertine mound at Mystic Hot Springs, Monroe, Utah
Resort & lodging

Mystic Hot Springs

Monroe, UT

A hillside hot springs retreat in Monroe on the old Cooper homestead, where 165°F spring water cools as it runs down to two 20-foot pools and five cast-iron tubs. Soaking is by reserved 2-hour slot shared with others booked at the same time. Overnight guests stay in a pioneer cabin, converted buses, tent sites or RV sites.

Minerals2,720 mg/LSodium–sulfate · high silica
From $28View
Reflecting pool and lounge chairs below sandstone cliffs at Ojo Caliente Mineral Springs Resort & Spa, Ojo Caliente, New Mexico
Resort & lodgingClothing opt.

Ojo Caliente Mineral Springs Resort & Spa

Ojo Caliente, NM

A historic spring resort below mesa cliffs on the Rio Ojo Caliente, with nine communal mineral pools named for their iron, soda, lithia and arsenic content, running about 80-105°F. Day passes are sold at the door with no reservations, and the springs are for ages 13 and up. The property also has a spa, a restaurant and wine bar, a 1916 hotel, cottages and an RV and tent campground.

Minerals2,490 mg/LSodium–bicarbonate · lithium · high silica
From $45View
Wooded creek gully in the forest at Orr Hot Springs, Ukiah, California
Resort & lodgingClothing opt.

Orr Hot Springs

Ukiah, CA

A small clothing-optional resort on 27 acres at the headwaters of Big River, about 12 miles west of Ukiah on Orr Springs Road. The bathhouse has private and communal tubs, a swimming pool, sauna, steam room and cold plunge, and guests cook their own meals in a shared kitchen because no food is sold. Day use runs noon to 9pm by reservation, and there is no cell service or WiFi.

From $50View
Steam rising off a rock-lined pool behind spring flowers at Orvis Hot Springs, Ridgway, Colorado
Resort & lodgingClothing opt.

Orvis Hot Springs

Ridgway, CO

A clothing-optional hot springs between Ridgway and Ouray with ten indoor and outdoor pools and ponds from about 65 to 112°F, using water that is neither heated nor treated. Outdoor areas and the sauna are clothing-optional for adults, while children must wear suits. Rooms and a small campground offer round-the-clock soaking.

Minerals2,270 mg/LSodium–sulfate · lithium · high silica
From $35View
Red adobe bathhouse with a palm tree on the street at Pelican Spa, Truth or Consequences, New Mexico
Bathhouse

Pelican Spa

Truth or Consequences, NM

A quirky, fully pet-friendly motel and bathhouse with private indoor soaking rooms and deep Japanese-style concrete tubs, filled fresh for each session. The geothermal water is pumped straight from the source without heating or treatment and runs about 102-112°F. Tubs are first come, first served, and non-guests can buy hourly sessions or soak cards at the front desk.

Minerals2,635 mg/LSodium–chloride
From $16View
Round soaking tub inside a wooden privacy fence at Pipestone Village & Hotsprings, Whitehall, Montana
Resort & lodging

Pipestone Village & Hotsprings

Whitehall, MT

Glamping cabins and domes near Whitehall, each with a private outdoor hot springs tub, on the site of the historic Pipestone Hot Springs. Soaking is for overnight guests only. Off-road and hiking trails surround the property, and Lewis & Clark Caverns and Butte are within a short drive.

Minerals376 mg/LSodium–sulfate · high silica
Overnight guestsView
Rock-lined hot pools lit up at night below a pine slope at Quinn's Hot Springs Resort, Paradise, Montana
Resort & lodging

Quinn's Hot Springs Resort

Paradise, MT

A resort on the Clark Fork River near Paradise with two lodges, more than 25 cabins, a restaurant and tavern. Its pool complex mixes 118F well water to temperatures from the upper 90s to 106F, with a 55F cold plunge and pools zoned by age, including an adults-only pool. Day visitors must book one of three 4-hour swim sessions online in advance.

From $21View
Round hot pool and larger pool beside a timber lodge in the pines at Red River Hot Springs, Elk City, Idaho
Resort & lodging

Red River Hot Springs

Elk City, ID

An off-grid lodge in the Nez Perce National Forest near Elk City with a natural hot spring pool that is not chlorinated. It rents lodge rooms, cabins (one with its own outdoor mineral soaking tub) and dry RV and tent sites, and a cafe serves burgers and breakfast burritos on weekends. Day soaks are paid per visit with no re-entry, and nudity is prohibited.

Minerals274 mg/LSodium–sulfate · high silica
From $20View
Wooden soaking decks over the Rio Grande at Riverbend Hot Springs, Truth or Consequences, New Mexico
Resort & lodgingClothing opt.

Riverbend Hot Springs

Truth or Consequences, NM

A hot springs inn on the Rio Grande in Truth or Consequences with eight common pools of 95-107°F on a shaded river deck, and seven private pools rented in 50-minute sessions. Both the hourly Property Pass and private soaks are booked in advance, and guests must be 12 or older. The largest common pool, Sierra, has an ADA pool lift.

Minerals2,635 mg/LSodium–chloride
From $30View
Historic white-trimmed inn with a wraparound balcony at Riverside Hot Springs Inn & Spa, Lava Hot Springs, Idaho
Resort & lodging

Riverside Hot Springs Inn & Spa

Lava Hot Springs, ID

An adult-only boutique hotel on the Portneuf River in downtown Lava Hot Springs. Three private indoor soaking rooms on the lower level take continuously flowing mineral water, tempered to 102-106F. Soaks are booked in advance and limited to 30 minutes.

Minerals790 mg/LSodium–chloride
Call for pricesView
Stucco spa building with palms and a vintage car at dusk at Roman Spa Hot Springs Resort, Calistoga, California
Resort & lodging

Roman Spa Hot Springs Resort

Calistoga, CA

A downtown Calistoga hotel with three soaking pools filled with geothermal water from the resort's own wells: a large outdoor pool at about 92-96°F, an outdoor jetted hot tub at 103°F and an indoor jetted pool at 100°F. The Baths at Roman Spa offers mud baths made with geothermal water, volcanic ash and peat. Pools are soaking-only, with no diving or splash games.

Minerals676 mg/LSodium–chloride · lithium · high silica
Overnight guestsView
Steam over a covered outdoor pool at Roystone Hot Springs, Sweet, Idaho
Resort & lodging

Roystone Hot Springs

Sweet, ID

A family-run hot springs RV park near Sweet with an outdoor pool under a vaulted roof and a jetted hot tub, each rented to one group at a time. The pool is about 98°F in winter and cooled in summer, and the hot tub runs about 104°F. The property is alcohol-free outside the Spring House event area.

Minerals575 mg/LSodium–sulfate · high silica
Call for pricesView
Aerial view of a palm-ringed pool at dusk at Sam's Family Spa Hot Water Resort, Desert Hot Springs, California
Resort & lodging

Sam's Family Spa Hot Water Resort

Desert Hot Springs, CA

A family-run hot-water resort and RV park on Dillon Road east of Desert Hot Springs, with four chlorine-free mineral spas, swimming and wading pools, a dry sauna and two steam rooms. The spas are drained, cleaned and refilled every morning. Day passes cost $25 on weekdays and $30 on weekends, are sold first come, first served, and kids of all ages are welcome.

Minerals873 mg/LSodium–sulfate
From $25View
Long outdoor geothermal swimming pool at Sand Dunes Recreation, Hooper, Colorado
Resort & lodging

Sand Dunes Recreation

Hooper, CO

A family pool complex near Hooper in the San Luis Valley, fed by a 118°F artesian well first struck during 1930s oil drilling. Alongside the main pools it has an adults-only greenhouse soaking area, a restaurant and bar, and campsites and cabins. The whole facility closes on Thursdays for cleaning.

Minerals335 mg/LSodium–sulfate · high silica
From $18View
Stone hot tub and tepees on the resort deck at dusk at Saratoga Hot Springs Resort, Saratoga, Wyoming
Resort & lodging

Saratoga Hot Springs Resort

Saratoga, WY

A historic resort in Saratoga with a 70-foot mineral pool at about 96-98°F and small teepee-covered hot pools at about 100-112°F. The pools are for overnight guests and members, though any spa treatment includes day use. On site are a brewery and pub, a restaurant and a golf course.

Overnight guestsView
Fenced outdoor pool beside a log cabin in the pines at Sawtooth Lodge, Lowman, Idaho
Resort & lodgingSeasonal

Sawtooth Lodge

Lowman, ID

A rustic lodge at Grandjean, founded as a hunting lodge in 1927 and run under a Forest Service special use permit, with a hot springs-fed pool. Cabin and yurt stays include pool access, and the restaurant serves breakfast, lunch and dinner with beer and wine.

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Resort & lodgingClothing opt.

Sea Mountain Nude Resort & Spa

Desert Hot Springs, CA

A clothing-optional, adults-only resort for couples and women, with a heated mineral water pool, a whirlpool and a cedar sauna. Day visits run 10:30am to 5pm year-round, and couples passes start at $99. No one under 21 is allowed on the grounds.

Minerals985 mg/LSodium–sulfate
From $79View
Grassy tundra valley below rocky granite tors at Serpentine Hot Springs, Nome, Alaska
Day pools

Serpentine Hot Springs

Nome, AK

Hot springs in Bering Land Bridge National Preserve, piped into an enclosed bathhouse next to a year-round bunkhouse and an unmaintained gravel airstrip. There are no roads, so most visitors fly in by air taxi, and in winter snowmachine trails are staked from Nome and Shishmaref. The site, known in Inupiaq as Iyat, has long cultural and spiritual importance.

Minerals2,600 mg/LSodium–chloride · lithium · high silica
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Long spring-fed swimming pool lined with palm trees at Shoshone Village (Shoshone Inn & RV Park), Shoshone, California
Resort & lodging

Shoshone Village (Shoshone Inn & RV Park)

Shoshone, CA

A small desert village with an inn, RV park and campground around a naturally warm mineral spring swimming pool. Inn guests use the pool free, and it sits beside the RV park and a short wetland trail through endangered pupfish and vole habitat. Shoshone is about a mile from the southeast entrance to Death Valley National Park.

Minerals1,027 mg/L
Call for pricesView
Pueblo-style historic lodge behind an adobe wall at Sierra Grande Lodge & Spa, Truth or Consequences, New Mexico
Resort & lodging

Sierra Grande Lodge & Spa

Truth or Consequences, NM

A downtown hot springs hotel run by Ted Turner Reserves with private mineral baths: three indoor and one outdoor bath under a pergola, with water up to 107°F. Walk-ins are welcome alongside hotel guests, and the spa offers massage, facials and body treatments. Book soaks and spa appointments by phone or in the lobby.

Minerals2,635 mg/LSodium–chloride
From $30View
Boulder-edged pool among tall pines at Sierra Hot Springs, Sierraville, California
Resort & lodgingClothing opt.

Sierra Hot Springs

Sierraville, CA

A nonprofit hot springs retreat on more than 600 acres outside Sierraville, about 30 minutes north of Truckee. Its four soaking areas run from the 95-96F Phoenix Baths to the 110-112F Temple Dome Hot Pool, which sits under a geodesic dome with two cold plunges, and all soaking areas are clothing optional. Every visit needs an advance reservation and at least one member in the party, and stays are in the Main Lodge, the Globe Hotel or the campground.

From $35View
Outdoor pool beside a timber lodge in the forest at sunrise at Silver Creek Plunge, Crouch, Idaho
Resort & lodging

Silver Creek Plunge

Crouch, ID

A family campground in the Boise National Forest about 25 miles north of Crouch, built around a 186,000-gallon geothermal pool that has operated since 1957. Water enters at 100-104F and the full volume turns over about every six hours. Lodging is rustic A-frames and cabins with no linens or showers, plus first-come tent and RV sites.

Minerals197 mg/LSodium–sulfate · high silica
From $15View
Round pool and lounge chairs at dusk at Sky Valley Resort, Desert Hot Springs, California
Resort & lodging

Sky Valley Resort

Desert Hot Springs, CA

An RV resort east of Desert Hot Springs whose sulfur-free hot water supplies 12 pools and spas, including a tub at about 104F. The pools are for resort guests, and no day pass is published. Its sister property, Caliente Springs, is a 55+ resort.

Minerals1,045 mg/LSodium–sulfate
Overnight guestsView
Large outdoor pool with steam on a prairie morning at Sleeping Buffalo Hot Springs & Resort, Saco, Montana
Resort & lodging

Sleeping Buffalo Hot Springs & Resort

Saco, MT

A Hi-Line resort just off US 2, 17 miles east of Malta, that began in the late 1920s as the American Legion Health Resort. A 3,200-ft artesian well feeds a 60 x 80 ft indoor pool (about 92F), a 128 x 60 ft outdoor pool added in 2025 (95-100F), hot tubs and a 48F cold plunge, all non-chlorinated and flow-through. Cabins, suites, an RV park, a steakhouse and a saloon are on site, with Nelson Reservoir across the road.

Minerals3,770 mg/LCalcium–sulfate
From $17View
Lodge deck with Adirondack chairs facing the forest at Sol Duc Hot Springs Resort, Port Angeles, Washington
Resort & lodgingSeasonal

Sol Duc Hot Springs Resort

Port Angeles, WA

A National Park Service concession resort in Olympic National Park's Sol Duc Valley, with three mineral pools from about 99 to 104°F and a freshwater pool. Day visitors buy 1.5-hour sessions, and pool use is included for cabin guests. The pools and cabins close each winter, from midday Nov 1 until March 20.

Minerals259 mg/LSodium–sulfate
From $19View
Long pool with umbrellas and palm trees at sunset at Solage, Auberge Resorts Collection, Calistoga, California
Resort & lodging

Solage, Auberge Resorts Collection

Calistoga, CA

A resort on the Silverado Trail whose Spa Solage Bathhouse has five geothermal pools, from a 50-55°F cold plunge and an ambient magnesium pool to a 98°F relaxation pool and two jetted pools at 102-104°F. The signature Mudslide pairs a mud treatment with a private geothermal soak. The spa is 18+; non-guests can buy a Bathhouse Access Pass.

Minerals646 mg/LSodium–chloride · lithium · high silica
From $225View
Soakers in an outdoor pool beside the mural-painted motel at Spa Hot Springs Motel & Tenderfoot Cabins, White Sulphur Springs, Montana
Resort & lodging

Spa Hot Springs Motel & Tenderfoot Cabins

White Sulphur Springs, MT

A motel on Main Street in White Sulphur Springs with three mineral pools: a new outdoor pool at about 103F, an older outdoor pool at 98F and an indoor pool at 105F. All three are drained and cleaned every night and refilled without added chemicals. The motel has 41 rooms and 12 cabins across the street, and guests swim free.

Minerals1,390 mg/LSodium–sulfate · lithium
From $16View
Painted wooden wagon-style private bath room at Spellbound Springs, Truth or Consequences, New Mexico
Resort & lodging

Spellbound Springs

Truth or Consequences, NM

A tiny-home village in Truth or Consequences with themed cottages and wagons, outdoor hot spring baths and wellness services. You must be a guest to use the baths; one cottage, Rosy's Oracle, has its own clawfoot hot spring tub.

Minerals2,635 mg/LSodium–chloride
Overnight guestsView
Rock-walled pools stepping down a forested hillside at Strawberry Park Hot Springs, Steamboat Springs, Colorado
Resort & lodgingClothing opt.

Strawberry Park Hot Springs

Steamboat Springs, CO

Rustic stone-lined pools in a forested valley about 7 miles from downtown Steamboat Springs, reached by a partly unpaved road that requires 4WD and winter tires from November through April. Visits are booked in 2-hour slots and paid in cash. Pools are clothing-optional and limited to adults after dark.

Minerals539 mg/LSodium–chloride · high silica
From $30View
Weathered barn bathhouse at sunset at Summer Lake Hot Springs, Paisley, Oregon
Resort & lodging

Summer Lake Hot Springs

Paisley, OR

A 145-acre resort on Highway 31 near Paisley with a 1929 wooden bathhouse holding a 15-by-30-foot indoor pool at 97 to 99°F, and outdoor rock pools averaging 104°F. The spring emerges at 113°F along the Slide Mountain fault. Soaking is only for guests staying in the cabins, houses, RV sites or tent field, and reservations are required.

Overnight guestsView
Steam rising from geothermal vents over a marshy valley at Surprise Valley Hot Springs, Cedarville, California
Resort & lodging

Surprise Valley Hot Springs

Cedarville, CA

A small adults-only lodging on Highway 299 five miles east of Cedarville in remote Modoc County, where each of its 19 rooms has its own private mineral-water tub. Fifteen tubs sit on fenced outdoor patios and four are inside suites, and guests can adjust the temperature. There is no day use, no public pool and no food service on site, and all stays need a reservation with a two-night minimum.

Overnight guestsView
Two guests on the edge of the pool below a glass-roofed pavilion at Sycamore Mineral Springs Resort & Spa, Avila Beach, California
Resort & lodging

Sycamore Mineral Springs Resort & Spa

Avila Beach, CA

A resort near Avila Beach built on sulfur mineral wells struck by oil prospectors in 1886. Its 24 private hillside hot tubs sit on wooden decks under sycamore and oak trees and are rented by the hour, from $25 per person on weekdays. A group lagoon with waterfalls and a mineral swimming pool are also bookable, and every guest room has its own mineral tub.

From $25View
Soakers in outdoor mineral pools at Symes Hot Springs Hotel & Mineral Baths, Hot Springs, Montana
Resort & lodging

Symes Hot Springs Hotel & Mineral Baths

Hot Springs, MT

A historic 1928 hotel in the town of Hot Springs with 48 rooms, cabins, apartments and RV sites. Outdoor mineral pools run from about 103F to 110F, with a waterfall between two of them and a 20 x 40 ft swimming pool, and the bath wing still has original clawfoot tubs in private stalls. The hotel also rents a jetted tub and steam room by the hour and offers massage.

Minerals287 mg/LSodium–sulfate · high silica
From $15View
Shaded creek in a wooded canyon at Tassajara Zen Mountain Center, Carmel Valley, California
Resort & lodgingSeasonalClothing opt.

Tassajara Zen Mountain Center

Carmel Valley, CA

A San Francisco Zen Center monastery at the end of a 14-mile dirt road in the Ventana Wilderness, with a historic stone bathhouse on the hot springs. The baths have indoor and outdoor plunges, steam rooms and a sauna; they are clothing-optional and separated by gender. Guests visit only in the summer season, from late April to early September, by reservation.

Overnight guestsView
Resort & lodging

TenZen Springs & Cabins

Stevenson, WA

Six minimalist cabins on a 100-acre property in Home Valley outside Stevenson, each with a private two-person infinity tub fed by geothermal water drawn from 3,000 feet below the Wind River. The water flows continuously through each tub and its temperature can be adjusted. It's for overnight guests only, and state tourism describes it as adults-only.

Overnight guestsView
Swimmer floating in a big outdoor pool below pine forest and chalets at Terrace Lakes Resort, Garden Valley, Idaho
Resort & lodging

Terrace Lakes Resort

Garden Valley, ID

A golf resort in Garden Valley with an outdoor geothermal pool open year-round to day visitors without reservations. The resort also has a restaurant and lounge, motel rooms, cabins, condos and RV spots. Drinks bought on site can be taken to the pool area with a wristband.

Minerals307 mg/LSodium–sulfate · high silica
From $15View
White cottage among bright autumn trees at The Lava Hotel & Spa, Lava Hot Springs, Idaho
Resort & lodging

The Lava Hotel & Spa

Lava Hot Springs, ID

A Main Street hotel in Lava Hot Springs, formerly Aura Soma Lava, with rooms, vacation rental homes and a conference center. The hotel lists an on-site hot springs pool and a massage studio.

Minerals790 mg/LSodium–chloride
Call for pricesView
Palm-lined pool in front of the stone inn at twilight at The Oasis at Death Valley, Furnace Creek, California
Resort & lodging

The Oasis at Death Valley

Furnace Creek, CA

A pair of hotels at Furnace Creek in Death Valley National Park, the Inn and the Ranch, each with a spring-fed swimming pool held at about 87F. The Ranch pool is open 8am-11pm to guests of both hotels, and the public can buy pool passes at the Ranch desk. The Inn's historic tiled pool is for Inn guests and sits beside a spa and poolside cafe.

Minerals602 mg/LSodium–bicarbonate
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Aerial view of the historic resort in a wooded valley at The Omni Homestead Resort & Spa, Hot Springs, Virginia
Resort & lodging

The Omni Homestead Resort & Spa

Hot Springs, VA

A large historic resort in Hot Springs whose spa garden centres on the Octagon Pool, fed by two hot springs at 96-97°F, alongside a heated infinity pool, a 103°F hot tub and a Finnish sauna. The Serenity Garden is for ages 18 and up and sells a limited number of day passes to non-guests. The resort also runs the Allegheny Springs water park, fed by its springs, and owns the historic Warm Springs Pools five miles north.

From $90View
Pool and lounge chairs in front of a low motel building at The Spring Resort & Spa, Desert Hot Springs, California
Resort & lodging

The Spring Resort & Spa

Desert Hot Springs, CA

A small adults-only (18+) inn and day spa on Miracle Hill with three mineral pools: an enclosed soaking pool, a 104°F outdoor pool and a larger swimming pool. Day visitors get two hours in the pools and Finnish sauna with a spa treatment of 50 minutes or more. The resort can reach capacity and turn away day use on weekends and holidays.

Minerals1,090 mg/LSodium–sulfate
Call for pricesView
Soakers in a terraced pool beside thatched umbrellas at The Springs Resort, Pagosa Springs, Colorado
Resort & lodging

The Springs Resort

Pagosa Springs, CO

A large riverside resort in downtown Pagosa Springs whose 47 terraced pools draw from the Mother Spring. General admission covers 25 original pools including an adults-only terrace, and a pricier wellness pass adds newer pools, a halotherapy sauna and a mud studio. Overnight guests get round-the-clock soaking.

Minerals3,205 mg/LSodium–sulfate · lithium · high silica
From $74View
Pool deck with lounge chairs beside a log lodge in the forest at Trinity Hot Springs, Featherville, Idaho
Resort & lodging

Trinity Hot Springs

Featherville, ID

A members-club hot springs resort near Featherville on the South Fork Boise River, formerly known as Paradise Hot Springs. One fenced geothermal pool runs about 95-108°F in summer and 90-95°F in winter, booked in 2-hour slots. At least one person per party needs a $35 annual membership; lodging guests get pool access.

Minerals203 mg/LSodium–sulfate · high silica
From $15View
Pool terrace with striped lounge chairs lit at night at Tuscan Springs Hotel & Spa, Desert Hot Springs, California
Resort & lodging

Tuscan Springs Hotel & Spa

Desert Hot Springs, CA

A 16-room adults-only (21+) boutique hotel with a large hot mineral pool and two mineral jacuzzis fed by a 350 ft well. Day visitors can use the pools and dry sauna for four hours for $50. Pool use is free with any treatment at the on-site La Bella Spa.

Minerals1,250 mg/LSodium–sulfate
From $50View
Round hot tub beside a rock waterfall at the lodge entrance at Twin Peaks Lodge & Hot Springs, Ouray, Colorado
Resort & lodging

Twin Peaks Lodge & Hot Springs

Ouray, CO

A 93-room lodge in Ouray built around a 156°F spring that feeds indoor and outdoor pools held at roughly 101-106°F. Day passes are sold at the front desk until 4 pm, with a thermal cave available for an extra fee. Hotel guests soak daily from 8 am to 10 pm.

Minerals1,390 mg/LCalcium–sulfate · lithium
From $39View
Palm trees reflected in the still grotto pool at Two Bunch Palms, Desert Hot Springs, California
Resort & lodging

Two Bunch Palms

Desert Hot Springs, CA

An adults-only resort on Two Bunch Palms Trail whose grounds center on a mineral-water grotto fed by a local aquifer that the resort says emerges at over 100°F. Day visitors can buy a Mineral Soak Day ($165, 9am-6pm, lunch included) or an evening soak with dinner. Guests must be 18 or older, and pets are not allowed.

Minerals710 mg/LSodium–sulfate
From $165View
Gabled inn buildings and entrance pergola at UpValley Inn & Hot Springs, Calistoga, California
Resort & lodging

UpValley Inn & Hot Springs

Calistoga, CA

A Lincoln Avenue hotel, formerly a Comfort Inn, whose outdoor swimming pool and whirlpool are filled with mineral water from its own geothermal well. A cedar dry sauna and steam room are included with the pool. Non-guests can buy a day pass through ResortPass.

Minerals668 mg/LSodium–chloride · lithium · high silica
From $62View
Natural pond on a hillside overlooking the San Luis Valley at Valley View Hot Springs, Villa Grove, Colorado
Resort & lodgingClothing opt.

Valley View Hot Springs

Villa Grove, CO

Natural ponds and pools on a hillside above the San Luis Valley, run as a nonprofit by the Orient Land Trust. The whole property is clothing-optional and family-friendly, and daily visitor numbers are capped, so reservations by phone are needed. Cabins and campsites are available, and leashed pets are allowed on camping and day-pass reservations for a fee.

Minerals246 mg/LCalcium–sulfate
From $20View
Busy outdoor pool with swimmers and floats at Veyo Pool, Veyo, Utah
Day poolsSeasonal

Veyo Pool

Veyo, UT

A spring-fed swimming pool in a basalt canyon in Veyo, north of St. George. Spring water enters at about 96°F and cools to the high 80s in the pool. The $18 canyon pass also covers a bolted climbing park and crawdad catching, and the pool is open May through October.

Minerals390 mg/LCalcium–sulfate
From $18View
Pool beside autumn trees and a fountain lawn at Vichy Springs Resort, Ukiah, California
Resort & lodging

Vichy Springs Resort

Ukiah, CA

A historic resort and country inn in the hills east of Ukiah, operating since 1854 and listed as California Historical Landmark #980. Its signature is 14 tubs of naturally carbonated mineral water at about 90F, alongside a 104F hot pool and a seasonal 25-meter swimming pool. Day visitors pay by 2-hour, 3-hour or all-day blocks and can use trails on the 700-acre reserve; bathing suits are required.

Minerals3,450 mg/LSodium–chloride · lithium · high silica
From $45View
Stone footbridge over a palm-lined pond at Warner Springs Ranch Resort, Warner Springs, California
Resort & lodgingTemporarily closed

Warner Springs Ranch Resort

Warner Springs, CA

A historic ranch resort in the Warner Valley of north San Diego County built around the Warner Hot Springs. The resort's own site lists the hot mineral pools, casitas, spa, dining and golf as closed for remodeling, with only the gas mart open. No reopening date has been published.

Minerals341 mg/LSodium–sulfate · high silica
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Ranch lodge in a mountain meadow framed by golden aspens at Waunita Hot Springs Ranch, Gunnison, Colorado
Resort & lodging

Waunita Hot Springs Ranch

Gunnison, CO

A long-established guest ranch about 27 miles east of Gunnison built around a large hot-spring-fed pool. It mainly hosts family reunions, weddings and group retreats. Whether outside visitors can soak was not confirmed on the official site.

Minerals582 mg/LSodium–sulfate · high silica
Overnight guestsView
Wooden Forest Service cabin among spruce trees on a rocky shore at White Sulphur Springs, Pelican, Alaska
Day pools

White Sulphur Springs

Pelican, AK · 0.9 mi hike

A Forest Service bathhouse and public-use cabin on Bertha Bay, on the outer coast of Chichagof Island in the West Chichagof-Yakobi Wilderness, about 65 miles northwest of Sitka. Boaters anchor at Mirror Harbor and walk a fairly level 0.9-mile trail, or skiff in from Porcupine Bay. The cabin sleeps four and is reserved on Recreation.gov.

Minerals276 mg/LCalcium–chloride · high silica
FreeView
Soaker in the candlelit underground vapor cave pool at Wiesbaden Hot Springs Spa & Lodgings, Ouray, Colorado
Resort & lodgingClothing opt.

Wiesbaden Hot Springs Spa & Lodgings

Ouray, CO

A historic lodge in Ouray built over a natural vapor cave where a hot spring cascades over rock into a 108°F soaking pool. Day visitors can buy 2-hour passes on-site for the cave and outdoor pool when capacity allows, and the screened private Lorelei pool can be reserved. Guests must be 12 or older.

Minerals1,390 mg/LCalcium–sulfate · lithium
From $55View
Soaker in a wooden flume pool under a covered bathhouse at Wilbur Hot Springs, Williams, California
Resort & lodgingClothing opt.

Wilbur Hot Springs

Williams, CA

An off-grid, solar-powered hot springs hotel on Sulphur Creek in western Colusa County, surrounded by a 1,560-acre nature preserve. Untreated mineral water flows continuously through flumes in a Japanese-style Fluminarium at about 100 to 109F, and the bathing area is clothing optional and device free. Confirmed reservations are required for both day use and overnight stays, and only guests 13 and older are admitted.

Minerals5,564 mg/L
From $69View
Wooden pool forms under construction beside a small building at Wild Horse Hot Springs, Hot Springs, Montana
Day poolsClothing opt.

Wild Horse Hot Springs

Hot Springs, MT

A rustic, off-grid soaking site outside the town of Hot Springs with communal outdoor plunges fed by the Mother Dragon artesian well. The plunges are chemical-free and continuously refreshed, and soakers can open hot-water valves to adjust the temperature. Rustic cabins and tipis share a bathhouse; there is no restaurant, so bring food and water.

Minerals421 mg/LSodium–chloride
From $18View
Round tiled soaking pool with a handrail at Yellowstone Hot Springs, Gardiner, Montana
Resort & lodging

Yellowstone Hot Springs

Gardiner, MT

A soaking complex on the Yellowstone River at Corwin Springs, eight miles north of the park's North Entrance. Three flow-through mineral pools include a 103-105F hot pool, a 98-100F main pool with alcoves and a 60-65F cold plunge. Cabins and suites are available year-round, RV and tent sites May to October, and the site is alcohol-, tobacco- and pet-free.

Minerals2,180 mg/LCalcium–sulfate
From $18View
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