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Free 24/7 public hot pool in Saratoga’s city park with changing rooms and showers, drive-up access, swimsuits required. Bring sandals for slick concrete.

Six controlled-temp soaking pools on the Snake River near Jackson, reached via a short walk over the red bridge, reservations often needed in peak season.

Forest Service hot springs pool south of Jackson with bathrooms and picnic tables, reachable by rough dirt road or winter ski/snowmobile for a true outing.

Indoor and outdoor mineral-water pools under the teepee dome in Thermopolis, easy drive-up access, simple amenities and family-focused vibe year-round.

Historic Thermopolis water-park-style hot springs facility with pools, slides, and vapor cave, but check current status, closures have occurred recently.

Free 20-minute soak in Thermopolis’ State Bath House inside Hot Springs State Park, drive-up access, basic changing rooms and a cooled mineral-water pool.

A remote cluster of mineral springs on private land near Sierra Blanca, known for travertine deposits and old resort ruins. Access is limited. Plan ahead.

A preserved bathhouse ruin and riverside park in San Antonio's Mission Reach, built around historic hot wells. Walk, read signs, no soaking. Easy detour.

Private soaking suites beside San Antonio's Hot Wells ruins, using geothermically heated sulfur water. Clothing optional, ages 16+. Book ahead. No kids.