The Best Hot Springs in the USA: Natural Pools, Resorts & Soaking Etiquette

Few things reset the body faster than slipping into water heated by the earth itself. The USA happens to be one of the world's great hot-spring countries: you can soak in a restored 19th-century bathhouse in Arkansas, hike eight miles to a steaming alpine pool in Colorado, or float under the northern lights in Alaska — often for the price of a park pass or a day admission. This guide breaks down the best hot springs in the USA by the experience they deliver, from wild and free natural pools to full-service luxury resorts, and closes with the etiquette and safety rules that keep every soak pleasant and safe.

Why the USA Is a Hot-Springs Powerhouse

Geothermal water runs through huge swaths of the American West, thanks to volcanic and tectonic activity along the Rockies, the Cascades, and the Basin and Range. The result is remarkable variety:

• Developed bathhouse culture in places like Hot Springs National Park, Arkansas, where people have "taken the waters" since the 1800s.
• Rugged, hike-to pools in national forests where you'll share a natural rock tub with a handful of strangers.
• Full-service resorts that pipe mineral water into landscaped pools, spas, and private soaking tubs.

That range is why the question isn't really "where are the best hot springs?" — it's "which kind of soak do you want?"

The short answer: if you want the densest concentration of world-class options, Colorado is the best single state for hot springs. If you want free, wild, and spectacular, head to the natural springs of the West. And if you want history and authenticity, Hot Springs National Park is unmatched.

What are the biggest hot springs in the US?

Three different records are worth knowing:

• Glenwood Hot Springs Pool in Colorado is often billed as the world's largest mineral hot springs pool — it's roughly two city blocks long.
• Grand Prismatic Spring in Yellowstone is the largest hot spring in the US (and among the largest in the world), at about 370 feet across. You look at it, though — at roughly 160°F it is absolutely not for soaking.
• Pagosa Springs, Colorado, is home to what's considered the world's deepest geothermal hot spring — measurements have exceeded 1,000 feet and the source has never been fully explored.

The National Park Classics

Hot Springs National Park, Arkansas

The oldest protected hot springs in the country live inside a national park that wraps around a real downtown. Hot Springs, Arkansas, built its identity on Bathhouse Row, a stretch of grand early-20th-century buildings where visitors still soak in the same mineral-rich water that drew people here more than a century ago.

Two standouts remain open for traditional bathing:

• Buckstaff Bathhouse — the only bathhouse on the Row that has operated continuously since 1912. Expect a no-frills, old-school thermal bath, whirlpool, and steam.
• Quapaw Baths & Spa — a more modern take with thermal pools, a steam cave, and spa services, inside a beautifully restored 1922 building.

The best part for budget travelers: entry to Hot Springs National Park is free, and you pay only for the bath you choose. If you're already mapping out a US national parks trip on a budget, this is one of the easiest parks to pair with a genuine soak.

Yellowstone: See It, Don't Soak It

Yellowstone is the most spectacular geothermal landscape in the country, but it's a viewing experience, not a bathing one. The water in features like Grand Prismatic Spring and Mammoth Hot Springs can scald you. Admire the colors from the boardwalks, and save your soaking for one of the developed springs a few hours' drive away in Colorado or Idaho. (Yellowstone is a highlight of any best national parks list — just for its geology, not its pools.)

Colorado's Mineral Circuit: The Best Hot Springs in Colorado

If you can only pick one state, make it Colorado. The Denver area is an easy jumping-off point for a loop through some of the country's finest soaking towns.

Glenwood Springs & Iron Mountain

Glenwood Springs, about 2.5 hours west of Denver, is Colorado's original hot-springs town. Glenwood Hot Springs Pool is the giant mentioned above — a family-friendly, resort-style pool fed by natural mineral water. Directly across the river, Iron Mountain Hot Springs offers more than 15 smaller geothermal pools at varying temperatures, arranged for a quieter, more scenic soak with mountain views.

Mount Princeton Hot Springs

Between Buena Vista and Salida, Mount Princeton mixes a family pool complex with a genuinely cool feature: natural creek-side soaking where hot water bubbles up through the rocks of Chalk Creek. You can sit in a shallow riverbed and feel the heat rise around you — a favorite for those who want "natural" without a long hike.

Strawberry Park Hot Springs

Outside Steamboat Springs, Strawberry Park is a beloved rustic spot: rock-walled pools tucked into the forest, kept deliberately simple. It's a great winter soak (the town is a ski hub) and is clothing-optional after dark, which is worth knowing before you go if you're bringing kids. The last stretch of road can be rough in snow; a four-wheel-drive shuttle runs in winter.

Ouray Hot Springs

In the "Switzerland of America," Ouray's municipal pool is fed by a local geothermal source and offers several pools at different temperatures, with views of the box canyon's cliffs. It's affordable and genuinely scenic, and pairs perfectly with the town's ice-climbing and hiking scene.

Pagosa Springs & The Springs Resort

Pagosa claims the deepest geothermal spring in the world, and The Springs Resort puts it to work with a series of terraced pools right along the San Juan River. It's a great mid-luxury option — spa amenities and river views without the eye-watering price of the backcountry resort tier below.

Dunton Hot Springs

Dunton is the "if money were no object" entry. An entire restored 1800s ghost town near Dolores has been converted into an all-inclusive luxury resort, with its own natural hot springs piped into a bathhouse and outdoor pools. Rooms run into four figures a night, but the setting — a high-mountain valley with restored log cabins — is one-of-a-kind.

Wild & Free: The Best Natural Hot Springs You Hike To

For purists, the best hot spring is one that didn't require a ticket office. These natural hot springs in the USA are free (or nearly free) and reward a little effort. Rules of thumb: pack out everything, check current closures, and respect that some are clothing-optional.

Conundrum Hot Springs, Colorado

A spectacular but demanding option: a roughly 8.5-mile hike (one way) from Aspen to a stunning pool at about 11,200 feet, framed by peaks. A permit is now required for overnight stays, and the altitude plus distance means this is not a casual day trip. Do it right and you'll soak at treeline with a view few developed resorts can match.

Goldmyer Hot Springs, Washington

A permit-only, hike-in spring in the Cascade foothills about an hour east of Seattle. The roughly 4.5-mile trail leads to pristine natural pools beside a creek, capped at a small number of visitors daily to preserve the quiet. It's the closest thing the Pacific Northwest has to a truly wild, well-kept secret.

Oregon's Classic Duo: Bagby & Umpqua

Oregon is a hot-springs heavyweight. Bagby Hot Springs, in Mount Hood National Forest, has rustic cedar tubs fed by a natural source — a quirky, much-loved soak. Umpqua (Toketee) Hot Springs, further south, offers terraced rock pools perched above the North Umpqua River with a big view of the valley. Both are free, and both get busy on weekends.

Fifth Water Hot Springs (Diamond Fork), Utah

About 90 minutes from Salt Lake City, a moderate ~2.5-mile hike leads to a series of turquoise, tiered pools beside a cascading creek. It's one of the most photogenic natural springs in the country — which means it's also popular, so go early and midweek.

Kirkham & Goldbug Hot Springs, Idaho

Idaho flies under the radar but is quietly a natural-soaking paradise. Kirkham Hot Springs, near Lowman, is almost too easy: roadside-adjacent cascades that tumble into riverside pools. Goldbug Hot Springs, near Salmon, is the hike-to gem — a ~2-mile climb to warm waterfalls and pools in a canyon.

California's Quick-Hit Springs: Travertine & Deep Creek

California rounds out the wild list. Travertine Hot Springs, near Bridgeport on the eastern Sierra, is a short drive and walk from the road to shallow, mineral-encrusted pools with a sweeping valley view. Deep Creek Hot Springs, in the San Bernardino Mountains, is a longer, hotter desert hike to clothing-optional pools along a creek. If you love these, you'll also like the secret swimming holes scattered across the same regions.

Photo by Jonas Denil on Unsplash

Luxury Hot Springs Resorts for a Splurge

If your version of "soak" includes a robe, a spa menu, and a glass of something cold, these luxury hot springs resorts in the USA are the ones worth the price tag.

• Castle Hot Springs, Arizona — a historic, all-inclusive resort in the desert north of Phoenix. Soaking pools are fed by a natural source that has drawn guests since the 1890s; rates are firmly in the splurge category.
• Ojo Caliente Mineral Springs Resort & Spa, New Mexico — one of the oldest health resorts in the country, known for several distinct mineral waters (including lithium, iron, and arsenic springs) and a serene high-desert setting.
• Ten Thousand Waves, Santa Fe, New Mexico — a Japanese-inspired mountain spa with communal and private tubs, cedar saunas, and a no-phones serenity policy.
• Two Bunch Palms, Desert Hot Springs, California — a stylish wellness resort near Palm Springs with mineral-rich grotto pools and a laid-back, adults-oriented vibe.
• The Springs Resort, Pagosa Springs, Colorado — the terraced riverside pools mentioned above; the sweet spot of "resort experience, reasonable-ish price."
• Esalen Institute, Big Sur, California — the famous cliffside baths above the Pacific are available to overnight guests (and occasional limited daytime access). Check current access, since Big Sur's Highway 1 can close after storms.

These resorts book out weeks (sometimes months) in advance for weekends, especially in fall and winter. Reserve early and ask about day-pass options — several offer daytime soaking without an overnight stay.

Photo by Nereid Ndreu on Unsplash

Bonus: Soak Under the Northern Lights

Chena Hot Springs, about 60 miles outside Fairbanks, Alaska, combines a geothermal pool with one of the best aurora-viewing bases in the state. The mineral pool is simple — a rock-lined outdoor pool kept comfortably warm — but the magic is the sky: soak while green curtains of light ripple overhead on a cold, clear night. Aurora season runs roughly from late August through April. If you're serious about chasing the lights, pair Chena with our guide to seeing the northern lights in the USA.

How to Choose the Right Hot Spring for You

A few practical filters:

• Families → developed pools with lifeguards and shallow areas (Glenwood, Ouray, Mount Princeton) are far more comfortable than wild creeks.
• Solo travelers & couples → wild springs and clothing-optional spots (Strawberry Park after dark, Deep Creek) offer quiet, but go in daylight and tell someone your plans.
• First-timers → start with a developed commercial spring where temperature, facilities, and rules are clear, then graduate to the wild ones.

Hot Spring Etiquette & Safety: The Rules That Make a Soak Better

Hot springs are shared spaces, and natural springs have no staff to enforce anything — so etiquette is the safety system.

Before you soak

• Shower first. Developed springs ask you to rinse off before entering; it keeps the shared water clean. At wild springs, a quick pre-rinse helps, too.
• Know the clothing rules. Many developed springs require swimsuits. Several natural springs are clothing-optional or have designated hours; check in advance so no one's surprised.
• Check for closures and warnings. Some natural springs occasionally close for amoeba or bacterial warnings (a rare but real concern in warm, still water). Don't dunk your head in natural pools, and never soak with open cuts.

While you soak

• Stay hydrated. Hot water dehydrates you fast, and it can also make you lightheaded. Water, not alcohol, is the soak-friendly drink — alcohol plus heat raises the risk of fainting.
• Limit your time. 15 to 30 minutes per session is a good rule; get out, cool down, then go back in if you want. Prolonged heat can overheat you.
• Keep it quiet. A low murmur is fine; loud calls and speakerphone music kill the atmosphere for everyone.
• Respect personal space. Don't crowd strangers' pools, and never assume the "best" pool is yours to claim.
• No glass, no litter, no soap. Glass breaks near bare feet; soap and shampoo contaminate natural pools. Leave nothing behind — many wild springs are on public land with no trash service.

Safety notes

• Water that feels "warm" may be much hotter near the source. Test with a hand or foot before wading in.
• Natural pools often sit far from cell service and help. Bring a headlamp if you'll be out near dark, and don't soak alone after dark in remote areas.
• Pregnant people and anyone with a heart condition should check with a doctor before soaking in hot water.

When to Go

• Fall and winter (October–April) are prime soaking season: cold air makes hot water feel incredible, snow-lined pools are spectacular, and crowds at wild springs thin out. This is also when December getaways in the USA get especially appealing.
• Spring brings high, fast, cold runoff — some riverside springs can be swamped or unsafe; check conditions.
• Summer is the easiest season for high-alpine springs like Conundrum (the trail finally melts out), but lower-elevation pools can feel too hot when the air is already warm.

FAQ

What is the best hot spring in the USA? There's no single best — it depends on what you want. For a one-of-a-kind all-around experience, Glenwood Hot Springs (world's largest mineral pool) and The Springs Resort in Pagosa are hard to beat. For wild beauty, Umpqua Hot Springs and Fifth Water top most lists. For history, Hot Springs National Park.

Where is the best place to go for hot springs? Colorado is the best single destination, thanks to its density and variety — Glenwood Springs, Iron Mountain, Mount Princeton, Strawberry Park, Ouray, Pagosa, and Dunton are all within a few hours of one another. Oregon, Idaho, New Mexico, and California are close runners-up for wild and natural springs.

What are some luxury hot springs resorts in the USA? The standouts are Dunton Hot Springs (Colorado), Castle Hot Springs (Arizona), Ojo Caliente (New Mexico), The Springs Resort (Pagosa, Colorado), Two Bunch Palms (California), and Ten Thousand Waves (Santa Fe).

Are natural hot springs safe? Generally yes, with care: test the temperature before entering, avoid dunking your head, skip them if you have open cuts, and check for any posted advisories. A handful of wild springs occasionally close for water-quality issues, so check current conditions before a long hike.

What are the top hot springs in the world? Beyond the USA, the most famous are Iceland's Blue Lagoon, Turkey's Pamukkale, Japan's onsen towns like Hakone and Beppu, and New Zealand's geothermal reserves. The USA's Grand Prismatic Spring in Yellowstone is among the largest single hot springs anywhere.

Do I need reservations? For popular resorts (Dunton, Castle Hot Springs, The Springs Resort, Ojo Caliente) and for overnight visits to Conundrum Hot Springs (which requires a permit), yes — book well ahead. Most developed day-use pools and free natural springs don't require reservations.

Final Thoughts

The best hot springs in the USA reward the effort you put into choosing. A 45-minute soak in a free riverside pool in Oregon can be every bit as restorative as a $1,000-a-night ghost-town resort in Colorado — the water is doing the same ancient work either way. Pick a style, respect the water and the people sharing it, and you'll understand why Americans have been "taking the waters" for well over a century.