Hot Springs State Park

Thermopolis is where “Wyomingites” and many other visitors come to play. One of the main reasons is the State Park. See it and you will understand why!

Hot Mineral Pools

The World’s Largest Mineral Hot Springs are open year round, including holidays. You can swim, slide, or just relax and soak in the water from the State Park’s Big Spring. Fun for all ages!

The State Bath House

In 1896 a treaty was signed with the Shoshone and Arapaho, which gave the public use of one of the largest mineral hot springs in the world. The hot springs was known as having “healing water”. There is no fee for using the State Bath House.

Rainbow Terraces

Long time deposits from the mineral-laden water have created a rainbow underfoot. The paved walkways along the riverfront take you over centuries of sediment, splendidly brushed by algae, plankton, and mineral deposits.

Swinging Bridge

This unique bridge has been restored in recent years and the brave soul can walk above the Big Horn River and enjoy a “bird’s eye” view of the Big Horn River and the Park.

The Big Spring

Thermopolis (Greek for “Hot City”) derived its name from the hot water that comes from Big Spring. The turquoise and green mineral laden spring issues 3.6 million gallons of water per day at a scorching temperature of 127 degrees. The water from this spring contains at least 27 different minerals, some say, making it very healthful to drink.