Hot Springs State Park Wyoming

Hot Springs State Park is Wyoming's dedicated thermal wellness park in Thermopolis, Hot Springs County, where the world-famous Big Spring — one of Earth's largest continuously flowing mineral hot springs — discharges millions of gallons of naturally heated bicarbonate-mineral water daily into a network of state-managed bathing facilities, commercial hot spring resorts, and the dramatic rainbow terraces of mineral-depositing thermal water that cascades down the hillside in a perpetual geological artwork. The treaty-mandated free public bathing provision here, established in 1896 through negotiations with the Shoshone and Arapaho nations who ceded the spring, represents one of the most unusual and historically significant public wellness commitments in American history, ensuring that Wyoming's greatest hot spring resource remains democratically accessible to all visitors regardless of ability to pay. Thermopolis's Hot Springs State Park, with its combination of historic commitment to public access, extraordinary Big Spring flow volumes, wildlife such as bison grazing in the park, and the dramatic Wyoming landscape of the Wind River Basin, stands as one of the American West's most uniquely meaningful and visually spectacular geothermal destinations.