Thermopolis

Thermopolis is the county seat and most populous town in Hot Springs County, Wyoming, United States. As of the 2020 U.S. census, the town population was 2,725. Thermopolis, Greek for "hot city", is the location of numerous natural hot springs, in which mineral-laden waters are heated by geothermal processes. Wikipedia.
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Thermopolis Trip Planner

Thermopolis Trip Planner

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Top attractions in Thermopolis

Star Plunge
1. Star Plunge
4.5
(801)
Water park
Water & Amusement Parks
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Been visiting the Star Plunge for over 40 years and it's still an amazing experience. There are very few places in the world where one can have such a unique experience. Don't pass it up on your way to the National Parks. Take the time to stop in, relax, and let the kids play. The price is reasonable and is good for the entire 12-hour business day with in and out privileges. They rent towels, suits, and lockers so no excuses.
Great pit stop on our way back to Denver from visiting Yellowstone. Very affordable and fun for the whole family. The State Hotsprings parks is awesome too! The Bison drive get you up close to a lot of bison! It really helped break up our drive!
Fairly busy, they do have lockers and showers. If busy you might to wait a bit for a dressing room. Day pass $15.50 a person so decent price. Vapor cave is very interesting, very hot. S good slides for older kids and adults, 1 for younger. Saunas, spectator area, snacks available, just the basics though, chips candy and drinks. They do have swim wear for sale on site.
Star Plunge is a great Hot Mineral Pool House with several pools and different temperatures. There is an outside pool and two slides outside, a hot water pool and a jump tower. Inside you have another big pool, and two whirlpools, a vapor cave and another slide. The changing rooms and showers are good too. Plenty of benches and seats outside. We really enjoyed our time here!
Really great place for a day visit with the family! We had a blast!! Facility was clean, Staff was friendly and pricing was about what you would expect. Water slides were really fun but they won't let you ride them tandem with the aller kids so that bummed my daughter out a bit. All in all worth the visit. They're open year round as well which us really neat!
Stunning property! Amazing views! Loved the different pool temperature options. Large clean changing facilities. Gift shop on site with pool toys and anything else you might forget. Unforgettable experience
I've been coming to the Star Plunge since I was a kid. Although it was once a bit run down, they have been making great renovations to make this place the desirable location it's been known to be. What a unique place to swim in hot spring enriched pools, enjoy waterslides, and a bask in a mineral springs steam room. Bring a picnic, and also check out the park next door! It's worth the trip whether you're alone to relax, a couple getaway, or a family day.
A cool way to experience the hot springs. A little pricey but you can come and go all day. It smells weird bc of the sulphur but otherwise pretty clean. Not a lot of food options so bring a cooler. Lifeguards were either completely disinterested in what you were doing or completely over the top lol Overall a good time
Hot Springs State Park
2. Hot Springs State Park
4.7
(2210)
State park
Nature & Parks
8,000 gallons flow daily from the hot spring feeding a free bathhouse at this park known for bison.
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We had so much fun at the Hot Springs State Park in Thermopolis. There are many trails to explore and lots of shade to enjoy the tranquility and make a lunch. We visited with our large dog and found the park peaceful and beautiful.
In August 2025, we visited the Hot Springs State Park in Thermopolis, Wyoming. The hot springs are adjacent to the Bighorn River, and they claim to be the world's largest mineral hot springs. The mineral rock formations are beautiful and colorful to see. The nearby mountain has "World's Largest Mineral Hot Spring" painted on it. We would like to return to Hot Springs State Park and spend more time there.
Visited these amazing, free, hot spring pools! perfect for relaxing after a long day of driving! A must stop on a cross country trip. Thanks 🙏
Its a nice state park. We just drove through and stopped briefly in the park. Several picnic areas. Nice walking trails.
Great place and the gentlemen at the visitor center desk was exceptionally nice, helpful, and informative. We will definitely return when we have more time to spend in this really cool town! We also LOVED the museum, featuring real dinosaur bones found in the area!
I come here every time we visit. It is relaxing and so well cared for. Stunning views, great walking paths, landscape and geology to see, and history to learn.
The lady in the information centre is super nice. She’s so accommodating and gave us so many useful informations, not only about the state park but about our next destination as well. The place is perfect for a picnic and a walk. Of course, to view a bunch of bisons as well.
If you would like to see wild bison roaming free in the state park this is the park to go to you can drive your car on the road right up to where they are and as long as you drive very slow the price of sometimes across the road right in front of you was there about 10 ft of you. The park is beautiful and well maintained and a great tour stop. I love to go to the park at least three to four times a week I'm a local there are some amazing rock formations caused by volcanic activity that are absolutely worth seeing as well as the world's largest hot springs
Wyoming Dinosaur Center
3. Wyoming Dinosaur Center
4.7
(1436)
Museum
Children's Museums
Kid-friendly educational displays of Jurassic-era bones & specimens from nearby dig sites.
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What a wonderful experience - for all ages! Well curated! I found it enjoyable to be able to take a slow-paced, self-guided tour and spent more time observing things I was most interested in. For those with mobility concerns: there are not sufficient places to stop and lean or sit - and there are endless paper signs posted, instructing visitors not to sit on the display perimeters. You may need to bring along a walking stick or your own walker/seat!
Our family of four visited August 22 and went on a dig for a day. We had a wonderful time thanks to our knowledgeable and friendly host intern Alyssa. She showed us around the dig sites and patiently guided our family of novices through a day of digging for dino bones. Throughout the day she shared interesting information and answered our questions while helping us feel welcome. We uncovered a vertebrae from a sauropod! We can’t imagine a better host for such a wonderful experience. Highly recommend this experience for families or individuals looking for a scientific and educational adventure!
What a great discovery in this quaint little town! The fossils were plentiful and incredible. The dinosaurs and mammal skeletons were so interesting. We could've spent half a day here, but were on a schedule. Don't miss this place!
I loved my visit! I think dinosaurs and fossils are super cool, I even bought myself a pinky sized trilobite. It took me around an hour to look at everything but I didn't read all there was we to read. My rating is slightly biased because I have a parasocial relationship with the fossil in the middle photo. It shows a fish that died while eating a squid, which is pretty crazy if you ask me.
Only reason not a five is small museum compared to others. People were friendly! Great part is a tour and takes you to a dig site! The dinosaur skeletons and information was great! Take $150 minimum.
A true gem of a place to visit. Stop along the road trip and check out the cool fossils and learn something new. There is a small food court and store if you want to check that out. They have military discounts and also have an option to visit the dig site. Regular adult ticket was $12.
World class museum with fossils, the actual fossils, that I have only seen in books since I was a kid. Absolutely jaw dropping specimens spanning the history of life. The early life fossils are mesmerizing and build toward the enchanting hall of dinosaurs. This is a museum where paleo-nerds will totally geek out and everyone else will be amazed by the beauty of life on Earth.
It's surprising to find such a beautiful and rich museum in such a small town. The collection is truly extensive and rivals those of museums in major European capitals. A lot of very interesting information. A must-see if you're in the area.
Legend Rock State Petroglyph Site
4. Legend Rock State Petroglyph Site
4.7
(220)
Archaeological site
Sights & Landmarks
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Nice place for a side trip! Follow the signs to 'Legend Rock' - car navigation might be inaccurate and lead you right into the oil field...🙄 I've heard... From the main road it's about a 2.7mi gravel ride with the steepest downhill part shortly prior the parking lot. We enjoyed our 4WD on the way back. I've never driven a RV, but considered it pretty steep for one. Obviously most have succeeded, but if you're unsure, check the gradient on a different app like Komoot and decide for yourself... Arrived there late at 5:30pm and the visitor center was already closed. Trailbook was full. Not sure how often staff is around.
Great place. Spent over an hour taking pictures and analyzing the art. It time in the morning was better than the afternoon I'm sure. Saw just a few folks. To tickets nor reservation needed.
Legend Rock is an easy to reach with an easy trail to follow. The petroglyphs run along the cliff face. They are well marked and close enough to be photograph from the trall. There is a large enough parking lot if you have a rv ot trailer in tow. This site is totally worth the side trip. Get out and stretch your legs, snack on those sandwiches you packed away for lunch and enjoy. I was there in the morning. There was still in nice breeze and no crowds. Many of the glyphs are unique and in really great shape. Please respect the signs and pack out your trash. There are vault style restrooms in the parking lot.
I've visited a number of petroglyph sites across the U.S. and this is absolutely one of my favorites. The petroglyphs vary in age and style, with some estimated to be 11,000 years old. The petroglyohs are in a shallow valley with a stream, which was clearly an important area for native peoples over the centuries. We visited in late August and had the place to ourselves at 8:00am. Highly recommended site to visit!
Just a short jaunt off the main road on your way from or two Riverton or Thermopolis. The petroglyphs are quiet awesome. There aren't many so it doesn't take that long... But well worth seeing. A short nice little walk
Went at sunset and I love it 🇺🇸not just the place, but the drive there. At the base there is small/nice interpretive center and it is well kept.Be aware that there are gravel roads during the drive there and wild life is everywhere,so you can really see where the inspiration for the Carvings/Drawings came from. Please do not litter y'all ❤️ I took a WY flag gifted to me in Cody.
Really cool, but visitors center was closesd so I wasn't able to get the information on the numbered markers. No shade so bring a hat.
Legend Rock State Petroglyph Site is a hidden gem in Wyoming. The Native American significance can certainly be seen and felt when visiting. There is a nice one room interpretive center that discusses some of the history of the area and a well-marked trail that takes you around to the big panels of Native American petroglyphs. The trail is an easy mile walk, but make sure you wear some hikers. The volunteer monitoring the site was very kind and helpful.
Wind River Canyon Whitewater & Fly Fishing
5. Wind River Canyon Whitewater & Fly Fishing
4.7
(247)
Raft trip outfitter
Sights & Landmarks
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Zane did a great job guiding! He provided some historical information about the canyon and cooked a great lunch with Kristen! My kids and I had a fantastic time and are already talking about going again! There was never a dull moment during the trip! Definitely get the full day guide. The half day guided tour is too short! You want to experience the upper and lower canyon! Zoey also did a great job with pictures. I highly recommend getting the photo package so you can cherish the memories!
Our family went on the full day white water rafting trip and loved it! Mac was an excellent guide. She kept us entertained the entire trip. We are already talking about when we are coming back. I highly recommend!
Friday 6/27/25, my family and I spent the whole day on the river. We had an absolute blast. We had a really good group, a lot of laughs. Cole was our amazing guide. He was very knowledgeable about the history and culture of the area. He shared all the names of the rapids and how they got their names. We had a geologist in our group so it was pretty educational discussing land forms etc. Cole was a great instructor. Mac and Jesse were other guides that were a lot of fun too. Jesse did the cooking for lunch. It was really yummy. We totally recommend wind river rafting. The whole staff was really friendly and helpful. Woooohooo!!!!
I have nothing but great things to say about our guide Jon and WRCW&FF. This outfitter is top notch, and the river is a great ride. We will definitely be booking the full day trip the next time we're in the area fixing the road. Thanks Again Jon, Danny, and team for helping make it happen! Pro tip... If you enjoy your trip. Tip your guide!
We had the best time rafting the river! We stayed at the campsite right next to Wind River Whitewater so it ended up being so convenient for us. Our guides were Zion and John and they both were awesome. The trip was beautiful and it was the perfect amount of adventurous and carefree. We felt safe and secure the whole time. Would highly recommend if you are in the area!
My family did both a whitewater trip and an evening float with Wind River Canyon and it was a great experience! John was enormously helpful and considerate with my mother in law who is medically fragile and has hearing difficulties. He's kind, professional, and is incredible at spotting animals at a distance! Highly recommend.
The most AMAZING experience of my life!! John was our guide! He was so patient with us, so knowledgeable of the river and passionate about his job! I felt so safe with him. I was so impressed with McKenzie’s energy with explaining what to expect. Zoey was so calming during a little excitement we had. Thank you to everyone! I’m taking back to Florida an experience that I will brag about the rest of my life! 😍
We LOVED our raft guide Kristen!! She has tons of experience and was a great hype woman and leader. We did the full route, which has three class 4 rapids and lots of class 3’s. Views were gorgeous throughout the whole river. Would recommend to anyone!
Hot Springs County Museum
6. Hot Springs County Museum
4.8
(141)
Local history museum
Museums
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The docent was very helpful and the museum is surprisingly complete for the area. We skimmed through a lot as not being natives, there isn't the local interest, but still a good museum. The room setups for the various homes and offices is very thorough. Kudos to the donations.
According to staff the Hot Springs County Museum has been around and accepting items for one hundred years. It shows. There is hardly a corner or showcase that is not stuffed with memorabilia. Two floors of exhibits. The basement has a recreation of shops from before the turn of the century . Well thought out and maintained. Thank you to the dedicated staff for preserving this important piece of history.
What an amazing museum! There's something for every history lover: pioneers, war-time, king cattle, period clothing, dress up time for cute photos, and a great scavenger hunt to get the kiddos excited! The staff is second to none, too! They were friendly and even offered my son a snack when his blood sugar dropped. We'll be back next summer!
I loved visiting this museum. It’s a lot bigger than it looks from the outside. The basement is full of interesting items. Wonderful collection of arrowheads, displayed nicely. History of the hole in the wall saloon was totally unexpected. I will be returning with friends
Lots and lots of interesting historical items. The Hole in the Wall actual "Bar" is inside. And a school house next door at the Annex. Wonderful.
The exhibits are numerous and well designed with very detailed authentic artifacts. The annex building includes a school house which was relocated. It is great addition to the museum. The walls have very realistic murals that enhance the exhibits. The museum is ran by a family...whose young son accompanied us to the annex and was very knowable and provided informed information on the exhibits. The museum is well kept and organized and extremely affordable!
Great way to spend an hour or so. Lots to see and there is more across the street at the Annex. Well worth the stop.
What a GREAT museum! Much bigger than it looks on the outside. Very nice displays; I loved the old dentist room! And the little schoolhouse across the street is a must-see...
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Thermopolis-Hot Springs Chamber of Commerce
Chamber of Commerce
Economic development agency
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Q&A about Thermopolis

You may want to look at the Museum of the Red River in Oklahoma. We stopped there several years ago. https://www.museumoftheredriver.org/
P
Pasquale Lang
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Weather in Thermopolis

Here's the historical average temperature in Thermopolis over a full year based on data compiled by NASA: for more details by month, see the weather in Thermopolis in January, February, March, April, May, June, July, August, September, October, November, or December
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