State Bath House

## Overview The State Bath House is a free, publicly operated bathhouse located within Hot Springs State Park in Thermopolis, Wyoming. Thermopolis is home to one of the world's largest mineral hot springs — Big Spring — which flows at an estimated 3.6 million gallons per day and has been a destination for soaking and healing for well over a century. The State Bath House offers visitors a chance to experience these naturally heated mineral waters at no cost, making it one of the most accessible hot spring experiences in the American West. The facility features both an indoor soaking pool and an outdoor pool, both fed by the park's geothermal waters. The pools are maintained at approximately 104°F (40°C), providing a comfortably hot soak year-round. Due to the high mineral content and elevated temperature of the water, visitors are limited to 20-minute soaking sessions per visit as a health precaution. Hot Springs State Park itself has a rich history. In 1896, the Eastern Shoshone and Northern Arapaho tribes of the Wind River Reservation ceded the hot springs area to the federal government through treaty, with the stipulation that a portion of the waters would always remain free for public use. The State Bath House fulfills that promise to this day. ## Directions 1. Head to the town of Thermopolis in Hot Springs County, Wyoming. 2. Enter **Hot Springs State Park**, located along the Big Horn River on the north end of town. 3. Follow signs within the park to the **State Bath House**, situated at **144 Tepee Street, Thermopolis, WY 82443**. 4. Parking is available near the bathhouse facility. ## What to Expect The State Bath House is an open-air facility with a welcoming, no-frills atmosphere. Inside, you'll find changing rooms and both an indoor and an outdoor mineral pool. The water is warm and mineral-rich, sourced directly from the park's famous hot springs. The soaking temperature is maintained at around 104°F. Because the facility is free and popular, expect it to be busiest during summer weekends and holidays. The 20-minute session limit helps keep wait times manageable and is also in place for health and safety reasons — prolonged soaking in hot mineral water can cause dizziness or overheating. Hot Springs State Park also features walking paths, scenic overlooks of colorful travertine terraces, a bison herd pasture, and the Big Horn River, so plan to explore beyond the bathhouse. Several commercial hot spring facilities are also located within the park if you'd like a longer or more amenity-rich soak. For current hours, seasonal closures, and additional details, visit the official Wyoming State Parks website at [wyoparks.state.wy.us](http://wyoparks.state.wy.us/index.php/places-to-go/hot-springs).