1. Strawberry Park Hot Springs, Steamboat Springs
Stay in a tent or rent a rustic cabin, and make sure to book the signature watsu treatment: a bodywork massage that takes place in geothermal waters. Get back to nature by going au naturel — the hot springs become clothing optional after dark. Watch a video of the daylight hours at Strawberry Park >>
2. The Springs Resort and Spa, Pagosa Springs
This luxury resort boasts more than 20 soaking pools (including the world’s deepest geothermal spring), a full-service spa and salon and a separate luxury suites hotel, which is LEED-certified for its environmentally conscious design. Unwind in one of the five adults-only pools, which have sweeping views of the San Juan Mountains.
3. Waunita Hot Springs Ranch, Gunnison
Surrounded by Gunnison National Forest, this remote lodge is an ideal getaway for horseback riding, fishing and swimming in the hot springs-fed pool. This family-friendly ranch also includes kid-appropriate activities like hayrides, horseshoes, fishing and more.
4. Glenwood Hot Springs Lodge, Glenwood Springs
This lodge is perfect for the entire family, boasting the world’s largest hot springs pool, two water slides and a mini-golf course. Escape to the resort’s full-service spa, where you can enjoy a soothing massage in their historic, sandstone bathhouse.
5. Avalanche Ranch Cabins & Hot Springs, Redstone
Stay in a private log cabin overlooking the Rocky Mountains and enjoy 24-hour access to three secluded hot springs pools. This pastoral 36-acre ranch also features hiking trails, a stocked fishing pond and private riverfront access.
6. Old Town Hot Springs, Steamboat Springs
This complex touts eight geothermal pools, water slides, a fitness center, tennis courts, massage services and childcare. Book a private cabana on the upper deck to make a full day of it.
7. The Historic Wiesbaden Hot Springs Spa & Lodgings, Ouray
Book one of the historic accommodations in this European-style lodge and take a breather with an Aveda spa treatment and a dip in the therapeutic hot springs. Unwind in the natural vapor cave, which includes a 108-degree soaking pool.
8. Ouray Hot Springs Pool & Fitness Center, Ouray
Surrounded by towering mountains and lush forests, this natural hot springs swimming pool is an inspiring place to bring your whole family. This crystal-clear pool boasts plenty of kid-approved amenities, such as a large slide, diving area, shallow section for young swimmers and a water volleyball area.
9. Indian Springs Resort, Idaho Springs
Variety rules with geo-thermal caves, private baths, outdoor Jacuzzis and a mineral water pool, not to mention lodging options that range from campsites to resort rooms. Visit Club Mud, where you’ll spread mineral-rich clay over your skin and hair, let it dry and rinse it away for a smooth and shiny finish.
10. Mount Princeton Hot Springs Resort, Nathrop
This luxurious mountain resort boasts numerous geothermal springs. Its proximity to Monarch and Ski Cooper ski areas makes a perfect aprés ski muscle relaxant. Thirty small pools are located right in Chalk Creek, which runs alongside the property and adds a super-natural feel to your soak.
11. Hot Sulphur Springs Resort & Spa, Hot Sulphur Springs
This resort’s waters, which run in the town of the same name, have been flowing from seven natural springs for hundreds of years and were used for healing by the Ute Indians. Hop from pool to pool to try out different temperatures and views.
12. Orvis Hot Springs, Ridgway
Seven pools in this San Juan Mountain paradise range from 98 degrees to the very steamy — and appropriately named — Lobster Pot, which can get up to 114 degrees. The unique gravel-bottom “pond” is known for Mount Sneffels vistas and massaging waterfalls.
13. Dunton Hot Springs, near Telluride
This all-inclusive resort is set in a restored ghost town, featuring private log cabins, mineral-rich hot springs and long-table dinners held in a 1800s saloon. Enjoy the soaking pool inside the restored 19th-century bathhouse or venture to Colorado’s only geyser, which is located nearby.
14. Overlook Hot Springs Spa, Pagosa Springs
Roof-top tubs, five indoor pools and one completely private tub give you options for any weather or occasion. Sunset Magazine recently named this hot springs, tucked inside a Victorian-era storefront, a great aprés-ski option just half an hour from Wolf Creek Ski Area.
15. Healing Waters Resort & Spa, Pagosa Springs
With lodging options spanning an RV park to rooms and suites with full kitchens as well as a full-service spa, Healing Waters makes sure you don't need to leave the grounds for a relaxing getaway. Consider an Aquastretch treatment in one of the warm-water pools to soothe weary muscles.
16. Box Canyon Lodge & Hot Springs, Ouray
Situated in a peaceful courtyard beneath a scenic mountainside with 360-degree views, the Box Canyon Lodge's hot-springs tubs are available only to overnight guests. Frequent guests recommend taking in a San Juan sunrise on the lodge's bench swings.
17. Trimble Spa & Natural Hot Springs, Durango
Relax in the sauna, swim laps in the massive naturally heated mineral pool, picnic and sunbathe poolside and soothe body and soul with massage treatments. There are a couple of lodging options for those who just can't tear themselves away from the geothermal waters.
18. Valley View Hot Springs, Villa Grove
This non-profit, clothing-optional, off-the-grid spot is a unique way to experience the land of the San Luis Valley. Several all-natural soaking ponds are found along wilderness trails, while a hot tub and sauna are heated geothermically and hydroelectrically. Reservations strongly recommended.
19. Joyful Journey Hot Springs Spa, Moffat
This San Luis Valley gem pulls its 140-degree artesian mineral waters from beneath the Sangre de Cristo mountains. Pools are gravity-fed and cooled to a comfortable and relaxing 98–110 degrees. Find unique lodging options can be found in the yurt and a tiny tipi village.
20. Alpine Hotsprings Hideaway, Nathrop
Nestled amid Colorado's Collegiate Peaks mountains, this hot springs comes with a three-bedroom home that can accommodate 12 people for private enjoyment of the area's mineral-rich waters. Massage therapists are available for house calls, so you can get all relaxation of larger resorts.
21. Creekside Hot Springs Cabin, Buena Vista
With a private hot-spring tub next to burbling Chalk Creek, this cozy three-bedroom vacation rental is as peaceful as it gets — when the sun goes down and the stars come out, there's a remote, majestic feeling you can't shake.
22. Antero Hot Springs Cabins, Nathrop
Right inside San Isabel National Forest along Chalk Creek, Antero's three cabins each come with their own hot-springs-fed pools and spectacular mountain views. Schedule a visit with the massage therapist and sign up for a hot herbal wrap or private yoga instruction.
23. Salida Hot Springs Aquatic Center, Salida
This publicly operated indoor pool with room for laps, fitness classes, arthritis pool therapy, a water slide and other activities. There are also private soaking pools, which can be reserved in advance.
24. Cottonwood Hot Springs Inn & Spa, Buena Vista
Stay on site in a Cottonwood Creek-side cabin or the lodge right in the Collegiate Peaks mountains or just come for the day. Several pools range in temperature from 94 to 110 degrees and spa services are available, as are the sounds of the creek rushing by.
25. Iron Mountain Hot Springs, Glenwood Springs
Coming in May 2015: Iron Mountain Hot Springs will be located at the site of the historic Iron Springs Spa on the banks of the Colorado River. Operated by Glenwood Caverns Adventure Park, the resort's 40-by-60-foot mineral hot springs pool and four smaller relaxation pools will feature natural designs that complement the scenic hillside landscape next to the river.
26. Twin Peaks Lodge & Hot Springs, Ouray
With a mountain-view outdoor pool and two soaking tubs — one indoors, adults-only and one outdoors — you can choose the perfect atmosphere for your float. Amenities like spectacular breakfast, a tiki bar and easy access to Jeep rentals, this is the perfect Ouray retreat.
27. Penny Hot Springs, Carbondale
Tucked along the banks of the Crystal River, this primitive spot is a short hike from Hwy. 133. About 12 people can fit in the pool, which is sectioned off from the river by large rocks.