Thermopolis, WY
State Bath House (Hot Springs State Park)
Free public bath house inside Hot Springs State Park, fed by the world's largest mineral hot spring; indoor and outdoor pools cooled to a therapeutic 104°F, set among…
Bighorn Basin · Thermopolis, WY
Best Western Plus Plaza Hotel
Check current ratesday-use admission
1soak styles
Thermopolislocation
Bighorn Basinregion
About these waters
Historic park-side hotel (the former Callaghan Apartments/Plaza Hotel) with an outdoor spring-fed mineral pool and a natural hot spring fed hot tub open 24/7, steps from the Bighorn River.
Amenities
✓Spring-fed outdoor pool
✓Hot spring fed hot tub (24/7)
✓Free breakfast
✓Fitness room
✓Pet friendly
Good to know
- Listing researched October 2026 — prices and hours change, always confirm with the spring before visiting.
- Hydrate between soaks and limit hot soaks to 15–20 minutes — mineral water dehydrates fast.
- Wild springs run on the honor system: pack out everything, leave the pool cleaner than you found it.
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Best Western Plus Plaza Hotel: FAQs
Do I need to book Best Western Plus Plaza Hotel in advance?
For day-use admission, popular resorts sell out on weekends — if the official site offers reservations, book ahead. Weekday visits are usually easier as walk-ins.
Are kids welcome at Best Western Plus Plaza Hotel?
Many developed springs welcome families, but age rules, family hours, and adults-only pools vary by property. Check the official site for the current policy before visiting with children.
How long should I soak at Best Western Plus Plaza Hotel?
Start with 15–20 minutes, then cool off and hydrate before going back in. Hot mineral water dehydrates you faster than you expect — drink water between soaks and don't push through dizziness.
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