Hot Springs State Park Bath House

The State Bath House sits inside Hot Springs State Park on the Big Horn River, drawing from mineral springs that flow at a constant 128 degrees Fahrenheit. The bath house itself cools that water to a steadier 104 degrees for soaking, split between an indoor pool and an outdoor terrace pool. Admission is free, and the facility is set up for walk-ins rather than scheduled visits.

Beyond the pools, the park adds context to the stop: a universally accessible boardwalk and more than six miles of trails along the terraces, the Swinging Bridge footbridge over the river, picnic shelters that can be reserved for groups, and a resident bison herd that's fed each morning in winter (viewable from a vehicle only). It's built as a full day-use park, so a soak can easily be paired with a walk or a picnic.

As of late August 2026, the outdoor soaking pool is closed for roughly a month while crews install a new ADA-compliant pool lift, redo concrete and handrails, and add sidewalk heating to cut down on winter ice. The indoor pool stays open throughout the work on the regular schedule. Given the ongoing construction, it's worth checking the park's site or Facebook page before heading out, since timelines on projects like this can shift.

With no entry fee and flexible walk-in access, this is a low-commitment stop for families, groups, or anyone road-tripping through central Wyoming who wants a free, no-frills mineral soak rather than a resort-style spa experience.