Mystic Hot Springs

Mystic Hot Springs sits outside Monroe, Utah, where naturally hot mineral water flows into a series of outdoor tubs and a thermal pool set into a hillside. The draw here is straightforward: soak in water that comes out of the ground already hot, under open sky, with sunset and stargazing views from most of the tubs.

A day pass covers a soaking session, and walk-ins are welcome alongside guests staying overnight. The property leans rustic rather than polished — think weathered buildings, repurposed vintage buses (including one tied to the Grateful Dead) converted into guest rooms, cabins, and an RV/campground, plus a relaxation lounge for lingering between soaks. Clean bathrooms and hot showers are available on site, and firewood and groceries are worth bringing if staying for a fire or a meal.

The springs operate around the clock for overnight guests, with the main facility listed as open daily from 9am to 11pm for day visitors. It suits families, couples, and groups looking for an unfussy soak rather than a spa with treatment menus and amenities lists — though body work sessions have been arranged on site in the past, so it's worth asking directly if that's something wanted. The setting is remote, about 1.5 miles off I-70, which adds to its appeal as a road-trip stop rather than a destination resort.

Expect a laid-back, slightly worn-in character rather than luxury finishes; repeat visitors and long-time fans tend to describe the place as more memorable for its unpolished charm and the quality of the water than for conventional spa comforts.