493 votes

Hot Springs State Park

168 Tepee St, Thermopolis, Wyoming 82443 USA

Free to Visit
Open Now
Thu 8a-5:30p
  • Independent
  • Pet Friendly
  • Wheelchair
  • Public
  • Outdoor
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“World's Largest Hot Springs”

Over colorful terraces along the Big Horn River at Thermopolis flows water from mineral hot springs. More than 8,000 gallons flow over the terrace every 24 hours at a constant temperature of 135 degrees Fahrenheit. The park has a free bath house where the water is maintained at 104 degrees for therapeudic bathing. Hot Springs has 6.2 miles of universally accessible trails and hiking trails. It is a full-service park with comfort stations, a Volksmarch trail, fishing, and a couple of boat docks. One of the reservable group picnic shelters is located here. Hot Springs is a day-use park. There is no fee for using the Bath House; however, there is a nominal charge for rental of towels and swimsuits. The hot mineral water is maintained at 104 degrees Fahrenheit to provide the safest healing water possible. Attendants are available to assist you with your needs. The Bath House hours are: Monday-Saturday, 8 a.m. to 5:30 p.m.; Sundays noon to 5:30 p.m. The Bath House is closed on holidays during the winter and open on holidays during the summer, noon to 5:30.

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Reviewed by

  • 8 Reviews
  • 18 Helpful
June 23, 2014

Hot Springs State Park is pretty cool. It is certainly not as impressive if you are traveling from Yellowstone, but you can swim in the water from these hot springs whereas doing so could be deadly at Yellowstone. I totally recommend stopping by if you are in the area. The picture above is the view from across the river. You have to cross the suspension bridge to get this shot. There is an indoor and outdoor public bathing pool which is FREE. You are allowed to wade in for 20 minutes at a time. Be advised that the public hours are short. They closed at 5:30 the Friday we stopped by. This is not advertised clearly on the website. There are two commercial mini water parks on either side of the public pools that are open later, but cost more than free.

While you are in Thermopolis, you should definitely also make time to check out the Dinosaur Museum!

7 people found this review helpful

Reviewed by

  • 8 Reviews
  • 2 Helpful
June 07, 2020
Rated 4.0

We didn’t get a chance to walk around and view the entire area, but we did drive through and see the bison, and the scenery is beautiful. The grounds are well kept and perfect for a break from whatever. Lost one star because the free bath houses were closed due to Covid, but both of the two privately ran pools were open for business. Seems that if the private pools could be open, so should the public site.

1 person found this review helpful

Reviewed by

  • 24 Reviews
  • 15 Helpful
July 06, 2018
Rated 5.0

A really interesting area. You can enjoy a short walk around the hot springs before taking a soak in the indoor or outdoor bath house for free. There is a small water park next door to the bath house as well as some nearby hotels within walking distance. The wind river runs along next to the springs where we saw backside fisherman catching rainbow trout. We are glad we stopped by on our way to Yellowstone and wish we could stay longer.

1 person found this review helpful

Reviewed by

  • 4 Reviews
  • 0 Helpful
June 22, 2022
Rated 5.0

If you're traveling through with kids, this park is a GREAT place to stop! LOTS of grassy green areas to stretch and play. Several park structures, walking trails, picnic tables, etc. Our kids enjoyed walking across the floating bridge. Tons of wildlife to see if you're looking. The state bath house offers a free 20-minute soak (8am-5pm) if you're wanting to experience mineral hot pools but don't want to pay to get into TeePee or Star Plunge. The park also hosts a local car rally in June; super fun! Also worth mentioning is the Dinosaur Museum that sits just outside the state park.

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Reviewed by

  • 40 Reviews
  • 2 Helpful
October 07, 2021
Rated 5.0

Heaven on earth. Do it! Free 20 minute soak.

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Reviewed by

  • 9 Reviews
  • 8 Helpful
August 01, 2017
Rated 5.0

If you're driving through this way, it's 100% worth a stop. Absolutely gorgeous park! I wouldn't go out of your way to come here though.

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Reviewed by

  • 10 Reviews
  • 7 Helpful
May 04, 2016
Rated 5.0

I absolutely fell in LOVE with Thermopolis. The bath house in the state park is free to soak from 8am to 5:30pm. Very clean and well kept facility. The park is beautiful. Please do yourself a favor and swing by if you are in the area. Nice people, nice soak, nice time. :)

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Hot Springs State Park

168 Tepee St
Thermopolis, Wyoming
82443 USA


Open now until 5:30 pm
  • Sun - Sat: 8:00 am - 5:30 pm

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  • Parking
  • Pets Allowed
  • Restrooms
  • Wifi
  • Wheelchair Accessible
  • Credit Cards Accepted
  • Outdoor Seating
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