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 its historic, sandstone bathhouse.

Stay in a tent or rent a rustic cabin at this Steamboat Springs gem, 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.

This luxury resort in Pagosa Springs 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.

Located on the site of the historic Iron Springs Spa on the banks of the Colorado River in Glenwood Springs, this resort offers a freshwater family pool with an elevated whirlpool spa and 16 smaller mineral hot-springs soaking pools that complement the scenic hillside landscape next to the river.

Surrounded by towering mountains and lush forests, a series of natural hot-springs pools are an inspiring place to bring your whole family. The shallow pool is ideal for young swimmers and features a water volleyball area, while the activity pool boasts an inflatable obstacle course. For more relaxation, seek out the hot pool or the infinity-edge overlook pool.

This luxurious mountain resort in Nathrop boasts numerous geothermal springs. Its proximity to Monarch Mountain 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.

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 people. Hop from pool to pool to try out different temperatures and views.

This San Luis Valley gem in Moffat 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 to 110 degrees. Unique lodging options can be found in the yurt and a tiny tipi village.

Relax in the sauna, swim laps in the massive naturally heated mineral pool, picnic and sunbathe poolside and soothe the 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.

This nonprofit, clothing-optional, off-the-grid spot in Villa Grove 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 are strongly recommended.