Hot Springs State Park, Mineral springs and wellness park in Thermopolis, United States.

Hot Springs State Park is a wellness destination in Thermopolis centered around continuously flowing mineral springs that cascade over limestone terraces. A public bathhouse provides access to these naturally warm waters for visitors seeking the therapeutic benefits of the minerals.

In 1896 Indian Inspector James McLaughlin negotiated the purchase of a 100-square-mile portion of the Eastern Shoshone reservation for $60,000. A one-square-mile section was released to Wyoming in 1897, becoming the Big Horn Hot Springs State Reserve, the state's first park. A bison herd was established in 1916.

The springs lie on land the Eastern Shoshone ceded in 1896, when Indian Inspector James McLaughlin negotiated a $60,000 purchase of 100 square miles of the Shoshone reservation. The 1-square-mile tract around the springs passed to Wyoming in 1897. The park's petroglyph site at Legend Rock, about 25 miles away, is also part of the park.

The bathhouse is free to enter and features pools filled with naturally warm mineral water throughout the day. Plan your visit for early morning or weekdays when crowds are lighter and you can enjoy more space.

A resident bison herd roams the park grounds year-round and receives food supplements during winter from park staff. This offers visitors an uncommon chance to observe these large animals in their natural setting.