Be it misty forest pools or bubbling desert springs heated in the red rocks - the United States has plenty of places where Earth naturally heats you up, the problem is, not all are accessible to you to actually bathe in. Our seasoned editorial team has explored the hottest springs around the country. You might need a bit of hike and some might provide spa robes and room service but they all offer naturally heated mineral water and a soak open to anyone ready to dig for it
Homestead Crater, Utah
This natural geothermal pool sits in Midway, about one hour from Salt Lake City. Limestone rises about ten feet from the earth within this natural beehive-shaped crater; in its depths lies a pool of clear, mineral-infused water that maintains a cozy temperature of 95°F year-round. The pool provides ample space for scuba diving, but it also appeals to visitors looking to enjoy a day of snorkeling or simply swimming deep within the earth—an experience like no other. During the day, swimmers find that there's enough light because sunlight beams down from the opening in the domed roof, illuminating the warm, cavern-like swimming area while sounds reverberate through the pool. Guests must make reservations through timed bookings with the Homestead Resort. The facility offers changing areas and life preservers for everyone. It truly offers a strangely beautiful geothermal experience.
Ojo Caliente Mineral Springs, New Mexico
Ojo Caliente is recognized as one of the oldest health resorts in the U.S. Here, the charm of desert landscapes is found meeting spa-like ambiance—a historic destination that is nestled beside sandstone formations and adobe structures located north of Santa Fe. The retreat is considered a rare find, with access to four types of different waters being provided: iron and soda; iron and lead; lead and arsenic; and lead and soda, all reportedly offering varying health advantages. Temperature-controlled pools are ranged from warm to a high of 105 degrees, and private soaking pools can be opted for by guests or the night can be spent in country-style rooms and suites. Kids under 13 are not welcomed; silence is appreciated.
Goldbug Hot Springs, Idaho
Deep in the Salmon-Challis National Forest, you will discover Goldbug, which presents itself like an undiscovered treasure. As you ascend a 3.5-mile one-way elevation rise, you will pass through expansive Big-sky views until you arrive at bubbling springs that spill out of rocky ledge after rocky ledge down to the sagebrush valley floor, framed by far-off mountain ridges looming large. Goldbug’s Springs offer totally natural and completely free pools, with some warm enough to soak in and others reaching the boiling hot range. Since there are absolutely no facilities available, be sure to bring along plenty of water, snacks, and layers for comfort—or just bring your camping gear, as you can camp below the springs. This is another beautiful place that is best enjoyed while avoiding the intense summer heat.
Chico Hot Springs, Montana
Tucked away just north of Yellowstone, Chico Hot Springs blends Old West charm with waters known for their healing properties. Built in 1900, it boasts a heated swimming pool and a hot soaking pool, both outdoors. An old lodge gives you the option for comfortable lodgings, including food and a saloon; you can even go for a horseback ride and a yoga class or just day-trip into town for the pools for a nominal fee. Overnight stays allow you to soak before everyone else and after they've retreated for the night.
Iron Mountain Hot Springs, Colorado
With commanding views of the Colorado River, Iron Mountain offers a sophisticated-yet-restful soak. This property hosts an impressive 31 mineral pools of different temperatures that gaze out at Glenwood Canyon while passing trains trundle by far below. Amenities like changing rooms, a cafe, and a separately located (21-and-over) facility with its own cafe and expanded bar offerings provide comfort. Families with children can enjoy the freshwater, all-ages family pool, and visitors who like to relax can do so amid well-maintained natural surroundings.
Chena Hot Springs, Alaska
Steaming waters and snow – only about 60 miles from Fairbanks, Chena offers visitors the uniquely pleasurable experience of soaking their bones while snow rims the edges of their hot pool. Even with temperatures well below -22F, the big, open-air “lake” at this hot spring remains open and inviting. This resort features cabins, an ice museum, and opportunities for aurora viewing during the winter season. They sell day passes, and the road in remains technically open all year round, but it can be brutal in the wintertime (so come for the hot soak after dark if you want to stand a chance of seeing the northern lights).
FAQ's
What are the best regions in the US for hot springs?
The Western United States holds the highest concentration of premier geothermal soaking spots, with states like Colorado, California, Idaho, Oregon, and Montana leading the way due to their active geological history. Iconic destinations range from developed resort towns like Pagosa Springs, Colorado, to remote wilderness pools tucked deep inside national forests.
Are there natural backcountry hot springs you can soak in for free?
Many completely natural, undeveloped hot springs exist on public lands, particularly across states like Idaho, Oregon, and California. These rustic rock-and-dirt pools require varying degrees of hiking, four-wheel-drive navigation, or primitive camping, and they operate on a pack-it-in, pack-it-out code with zero on-site amenities.
Do commercial hot springs resorts require advance reservations?
Most popular commercial hot springs and wellness retreats—such as Iron Mountain in Colorado or Esalen in California—strongly recommend or outright require booking day passes and overnight lodging weeks or months in advance. Because soaking capacities are strictly managed to preserve a relaxing environment, spontaneous walk-ups are frequently turned away.
What safety precautions should you take before soaking?
Geothermal waters carry high mineral concentrations and extreme temperatures that can easily cause dehydration, dizziness, or overheating. Experts recommend limiting individual soak sessions to 15 or 20 minutes, staying well-hydrated with water, and avoiding alcohol before or during your soak.
Can you visit hot springs year-round?
Hot springs remain open across all four seasons, and many travelers consider winter to be the absolute best time to visit. Sitting in a steaming 102-degree mineral pool while snow falls around you in places like the Rocky Mountains or Alaska creates a uniquely contrasting outdoor experience.
