Our Thermopolis guide covers practical planning for Thermopolis Wyoming — best time to visit, getting there, and what to do on the ground.
Nestled in the heart of Wyoming, Thermopolis is a hidden gem that beckons travelers with its unique blend of natural wonders and prehistoric history. Our team at Roam States has compiled this comprehensive guide to help you plan an unforgettable trip to this captivating destination. From the world’s largest mineral hot spring to fascinating dinosaur exhibits, Thermopolis Wyoming offers a distinctive experience that sets it apart from typical tourist traps.
Why Visit Thermopolis
Thermopolis, Wyoming, is a destination unlike any other, primarily celebrated for its extraordinary geothermal features. It's home to the world's largest mineral hot spring, a natural wonder that offers both relaxation and therapeutic benefits. The town's commitment to providing free public access to these healing waters is a testament to its welcoming spirit, ensuring that everyone can experience the unique sensation of soaking in mineral-rich pools. Beyond the rejuvenating hot springs, Thermopolis boasts a surprisingly rich paleontological history, with world-class dinosaur exhibits that transport visitors millions of years into the past. The surrounding Hot Springs State Park further enhances the appeal, offering scenic beauty, wildlife viewing, and opportunities for outdoor recreation. We believe Thermopolis offers a refreshing departure from overcrowded destinations, providing a genuine and enriching travel experience.
Who It's Best For
Thermopolis caters to a diverse range of travelers seeking a unique and relaxing getaway. It's an ideal destination for families, thanks to its engaging dinosaur museum and the accessible, family-friendly hot springs. History buffs and geology enthusiasts will find themselves captivated by the ancient petroglyphs and the geological marvels of the hot springs terraces. Those looking for a wellness retreat will appreciate the therapeutic qualities of the mineral waters and the serene atmosphere. Outdoor adventurers can enjoy the trails and wildlife viewing within Hot Springs State Park. Ultimately, Thermopolis is perfect for anyone who appreciates natural beauty, a touch of prehistoric wonder, and a slower pace of life, all without the usual tourist hustle.
Getting There & Parking
Reaching Thermopolis, Wyoming, typically involves a scenic drive through the vast landscapes of the state. While Thermopolis does not have its own major airport, several regional airports serve the wider area. The closest significant airports include Casper/Natrona County International Airport (CPR) to the south and Yellowstone Regional Airport (YRA) in Cody to the northwest. From these airports, you'll need to rent a car, which we highly recommend for exploring Thermopolis and the surrounding Hot Springs County at your own pace. Driving allows for flexibility and the opportunity to appreciate the expansive Wyoming scenery.
If you're planning a road trip, Thermopolis is conveniently located on US-20. It's approximately 84 miles south of Cody and 130 miles north of Casper.
Once you arrive in Thermopolis, parking is generally straightforward and ample, especially at the main attractions. For Hot Springs State Park, free parking is available throughout the park grounds. You'll find designated parking areas near the State Bath House, the Swinging Bridge, and other points of interest. Similarly, the Wyoming Dinosaur Center and other local attractions typically offer convenient on-site parking. We found that downtown Thermopolis also provides accessible parking, making it easy to explore the local shops and eateries on foot. No advance reservations are required for parking at the State Bath House.
Top Things to Do
When considering things to do at Thermopolis, the town’s natural hot springs are undoubtedly the star attraction. However, the area offers a surprising depth of activities, making it a fantastic destination for all ages. Beyond the therapeutic waters, there are significant historical and paleontological sites that truly make Thermopolis a unique stop in Wyoming. This section will cover the top things to do at Thermopolis and within Hot Springs County, ensuring you make the most of your visit.
Hot Springs State Park
Hot Springs State Park is the crown jewel of Thermopolis and a must-visit. The park is home to the world's largest mineral hot spring, Big Spring, which produces approximately 3.6 million gallons of water per day at a source temperature of 127 degrees Fahrenheit. The park itself is free to enter, and the main attraction is the State Bath House. Here, you can enjoy a free 20-minute soak in indoor and outdoor pools, where the water is maintained at a therapeutic 104 degrees Fahrenheit. This free access is guaranteed in perpetuity by an 1896 treaty with the Shoshone and Arapaho tribes. The State Bath House is open Monday through Saturday from 8:00 AM to 5:30 PM and Sunday from noon to 5:30 PM, though it is closed on winter holidays and open noon to 5:30 PM on summer holidays.
Beyond the bathhouse, the park features impressive travertine terraces, formed by mineral deposits from the hot springs, which display vibrant colors from minerals and algae. While boardwalks typically allow close viewing of these formations, a full replacement project is underway through late August 2026, so we recommend checking conditions before planning your visit around them.
Another highlight within the park is the resident bison herd. The Hot Springs State Park bison herd serves as the central herd for all of Wyoming's state parks, with about 15 animals grazing in a fenced range. During colder months, you might catch a morning feeding around 8:30 AM. Remember that these are wild animals, and viewing should always be done from a safe distance, ideally from your vehicle.
Don't miss the iconic Swinging Bridge, a suspension footbridge over the Bighorn River, which offers unique views of the river and mineral terraces. The park also offers 6.2 miles of accessible trails, perfect for a leisurely stroll or a more invigorating walk. Hot Springs State Park is a day-use park, meaning no overnight camping is permitted.
Wyoming Dinosaur Center
For those interested in prehistoric life, the Wyoming Dinosaur Center is a world-class facility that offers an immersive journey back in time. Located in Thermopolis, this museum houses over 58 mounted dinosaurs, both real and replica, along with hundreds of displays and dioramas. It's home to some truly remarkable specimens, including the "Thermopolis Specimen" of Archaeopteryx, the only real fossil of this dinosaur in North America, and Supersaurus "Jimbo," one of the largest mounted dinosaurs ever.
The museum is dedicated to science education, outreach, and research, providing engaging experiences for visitors of all ages. Beyond the exhibits, the Wyoming Dinosaur Center offers unique hands-on opportunities. Visitors can participate in "Dig for a Day" programs at active excavation sites, working alongside paleontologists to uncover real dinosaur bones. The "Shovel Ready Program" is available for ages 3 and up, with advanced reservations required and a cost of $80.00 per person, which includes museum admission. Closed-toe shoes are mandatory for dig programs.
The museum's summer hours (May 1 through Labor Day Weekend) are Monday-Friday from 9:00 AM to 5:00 PM, and Saturday & Sunday from 10:00 AM to 5:00 PM. Winter hours (after Labor Day Weekend to April 30) are Monday-Friday from 9:00 AM to 4:00 PM, closed Saturday and Sunday. Admission fees are $12.00 for adults (13-64), $10.00 for seniors (65+), children (4-12), and veterans, and $2.00 for Thermopolis residents with local ID. Combination tickets for the museum and Dino De-Tour are also available.
Legend Rock Petroglyph Site
Approximately 29-30 miles northwest of Thermopolis lies the Legend Rock Petroglyph Site, one of Wyoming's most significant archaeological treasures. This site features over 300 petroglyphs carved into sandstone panels, some dating back as far as 10,000 years. It's considered one of the most fragile sites in the Wyoming State Parks system.
Access to Legend Rock requires a key and permit during the off-season (October through April), which can be picked up at the State Bath House in Hot Springs State Park, the Thermopolis Chamber of Commerce, or the Hot Springs County Museum. During the summer season (May through September), no key is required, and the site is open from 8:00 AM to 6:00 PM. There is no admission fee, but a photo ID is required for the permit. The site grounds are open year-round, weather permitting, from sunrise to sunset.
We advise visitors to stay on marked trails and refrain from touching the petroglyphs, as even oils from hands can affect future research. The site is under video surveillance for security. Directions to Legend Rock can be a bit tricky, so we recommend following specific "Legend Rock" signs rather than relying solely on GPS, as it might lead you into oil fields. The road includes a steep gravel section, so consider your vehicle's capability.
Hot Springs County Museum & Cultural Center
For a deeper dive into local history, the Hot Springs County Museum & Cultural Center in Thermopolis offers exhibits on pioneer life, Native American artifacts, and the area's rich geothermal heritage. It's a great complement to your visit to the hot springs and dinosaur center, providing context to the region's past.
Other Things to Do in Hot Springs County
Beyond the main attractions, Hot Springs County offers additional activities. Consider a scenic drive through the Wind River Canyon, a breathtaking geological formation with towering cliffs and the Bighorn River winding through it. Fishing in the Bighorn River is also a popular pastime. For those interested in local events, check the Thermopolis Chamber of Commerce for any festivals or gatherings during your visit. These things to do at Thermopolis and its surroundings ensure a well-rounded experience.
Best Time to Visit
The best time to visit Thermopolis, Wyoming, largely depends on your priorities. The town experiences distinct seasons, each offering a different charm. Generally, the most popular time to visit is from spring through fall, particularly May through September, when the weather is mild and most outdoor activities are easily accessible.
During the summer months (June, July, August), Thermopolis enjoys warm, sunny days, perfect for exploring Hot Springs State Park, hiking, and participating in the Wyoming Dinosaur Center's "Dig for a Day" programs. Average summer temperatures can reach into the 90s Fahrenheit, but the dry climate makes it feel comfortable. This is also when the town is most vibrant, with all attractions operating on extended summer hours. However, it's also the busiest time, so expect more visitors at the hot springs and museums.
Spring (April, May) and fall (September, October) offer pleasant temperatures, fewer crowds, and beautiful scenery, especially as the leaves change color in autumn. These shoulder seasons are ideal for those who prefer a quieter experience while still enjoying comfortable weather for outdoor exploration. The hot springs remain a wonderful draw during these times, providing a warm respite from cooler air.
Winter (November through March) in Thermopolis brings colder temperatures and snow. While some may shy away from the cold, a winter visit offers a unique and cozy experience, particularly for soaking in the warm mineral hot springs. The contrast between the chilly air and the 104-degree water is incredibly invigorating. The State Bath House remains open year-round, closing only on Thanksgiving and Christmas Day. The Hot Springs State Park bison herd is also fed daily during late fall and winter, offering a unique viewing opportunity around 8:30 AM. If you're looking for a peaceful, rejuvenating trip, winter can be an excellent choice for the best time to visit Thermopolis.
Where to Stay Nearby
When planning your trip to Thermopolis, finding suitable Thermopolis lodging is key to a comfortable and enjoyable stay. While Thermopolis is a smaller town, it offers a range of accommodations to fit different preferences and budgets, from hotels and motels to more unique local options. Our team recommends booking your Thermopolis lodging in advance, especially during peak summer season, to ensure availability.
Within Hot Springs State Park itself, you'll find a couple of hotels that offer their own hot mineral water swimming pools, providing convenient access to the springs. These can be an excellent choice for those whose primary goal is to soak and relax. For a more comprehensive list of options, consider checking the Thermopolis Chamber of Commerce website or major booking platforms.
Here are some types of Thermopolis lodging you can expect:
- Hotels and Motels: You'll find a selection of national chain hotels and independent motels in and around Thermopolis. Many offer standard amenities like free Wi-Fi, breakfast, and comfortable rooms. Some may even feature their own hot tubs or pools.
- Vacation Rentals: For those seeking more space, privacy, or a home-away-from-home feel, vacation rentals such as cabins or houses are available through various online platforms. These can be particularly appealing for families or longer stays.
- Campgrounds and RV Parks: If you prefer to connect with nature, there are several campgrounds and RV parks in and around Thermopolis. Hot Springs State Park itself is a day-use park and does not offer overnight camping, but nearby private campgrounds provide facilities for tents and RVs. Camping fees for state parks generally involve a base rate plus a day-use fee and taxes.
When deciding where to stay near Thermopolis, consider your priorities. If direct access to the hot springs is paramount, look for accommodations within or immediately adjacent to Hot Springs State Park. If you prefer a quieter experience or are traveling with a larger group, a vacation rental might be more suitable. Regardless of your choice, we suggest reading recent reviews to ensure the Thermopolis lodging meets your expectations.
Sample 2-Day Itinerary
To help you make the most of your visit to Thermopolis, our team has crafted a sample 2-day itinerary that balances relaxation with exploration of the area's unique attractions.
Day 1: Hot Springs & Dinosaurs
- Morning (8:00 AM - 12:00 PM): Hot Springs State Park Immersion
Start your day at the famous Hot Springs State Park. Head directly to the State Bath House for a rejuvenating, free 20-minute soak in the mineral-rich waters. The Bath House opens at 8:00 AM on weekdays, so an early start ensures a peaceful experience. After your soak, take a leisurely stroll along the park's accessible trails, admiring the colorful travertine terraces (note the boardwalk replacement project through late August 2026). Keep an eye out for the resident bison herd grazing in their pasture. Cross the Swinging Bridge for unique views of the Bighorn River.
- Lunch (12:00 PM - 1:00 PM): Local Fare
Enjoy lunch at one of Thermopolis’s local eateries, many of which are conveniently located near the state park.
- Afternoon (1:00 PM - 5:00 PM): Wyoming Dinosaur Center Adventure
Spend your afternoon at the Wyoming Dinosaur Center. Explore the impressive collection of mounted skeletons, fossils, and dioramas, including the "Thermopolis Specimen" of Archaeopteryx. If you've made reservations, consider participating in a "Shovel Ready" or "Dig for a Day" program for a hands-on paleontological experience. The museum is open until 5:00 PM in the summer.
- Evening (5:00 PM onwards): Relax and Dine
After a day of exploration, relax back at your Thermopolis lodging. Enjoy dinner at a local restaurant, perhaps trying some regional Wyoming cuisine.
Day 2: Ancient Art & Scenic Drives
- Morning (9:00 AM - 1:00 PM): Journey to Legend Rock
Embark on a morning trip to the Legend Rock Petroglyph Site. Remember to pick up your key and permit from the State Bath House or Chamber of Commerce if visiting between October and April. Allow ample time for the scenic drive (approximately 30 miles northwest of Thermopolis) and for exploring the hundreds of ancient rock carvings, some dating back 10,000 years. Follow the designated trails and observe proper etiquette to preserve this fragile site.
- Lunch (1:00 PM - 2:00 PM): Picnic or Return to Town
You can pack a picnic to enjoy at Legend Rock's picnic shelter, or drive back to Thermopolis for lunch.
- Afternoon (2:00 PM - 5:00 PM): Wind River Canyon & Local History
Take a scenic drive through the breathtaking Wind River Canyon, just south of Thermopolis. The drive offers stunning geological views and opportunities for photography. Alternatively, delve deeper into local history at the Hot Springs County Museum & Cultural Center, learning about the area's pioneer past and geothermal heritage.
- Evening (5:00 PM onwards): Farewell Thermopolis
Enjoy a final dinner in Thermopolis. Consider a visit to one of the commercial hot springs facilities in Hot Springs State Park, such as Hellie's Tepee Pools or Star Plunge, if you desire more soaking time beyond the free State Bath House (note that these charge admission fees and Star Plunge may be temporarily closed).
This itinerary provides a robust overview, but feel free to adjust it based on your interests and pace. Remember to check current hours and any potential closures for attractions before your visit. For more travel inspiration in the state, explore our guide to the Best places in Wyoming.
Is It Worth Visiting?
Our team at Roam States confidently asserts that Thermopolis, Wyoming, is absolutely worth visiting. While it may not be as widely known as some of Wyoming's national parks, it offers a distinct and enriching travel experience that often surprises first-time visitors. The town's primary draw, Hot Springs State Park, provides free and accessible mineral hot spring bathing, a unique offering that promotes relaxation and wellness without any cost. This alone makes Thermopolis worth visiting for those seeking rejuvenation.
Beyond the therapeutic waters, the area's rich paleontological significance, highlighted by the Wyoming Dinosaur Center and its hands-on dig programs, provides an educational and exciting adventure for families and science enthusiasts alike. The ancient art at Legend Rock Petroglyph Site offers a profound connection to human history, dating back thousands of years. The combination of natural beauty, historical depth, and family-friendly activities makes Thermopolis worth visiting for a diverse range of travelers. It's a destination that promises both relaxation and discovery, leaving visitors with lasting memories of Wyoming's unique charm.
How to Get There
Understanding how to get to Thermopolis is crucial for planning your journey to this unique Wyoming destination. As an independent travel authority, we emphasize that a personal vehicle is almost essential for exploring Thermopolis and its surrounding attractions.
By Air: The closest commercial airports to Thermopolis are:
- Casper/Natrona County International Airport (CPR): Located approximately 130 miles south of Thermopolis. This airport offers connections to major hubs, and car rentals are available.
- Yellowstone Regional Airport (YRA) in Cody: Situated about 84 miles northwest of Thermopolis. This airport is a popular gateway for those also visiting Yellowstone National Park and offers car rental services.
From either of these airports, you will need to rent a car and drive to Thermopolis. The drive itself is part of the Wyoming experience, offering expansive views of the state's diverse landscapes.
By Car: Thermopolis is well-connected by U.S. Highway 20. Here’s a general idea of driving distances from key regional cities:
- From Denver, Colorado: The drive is approximately 6-7 hours, heading north on I-25 and then west on US-20.
- From Salt Lake City, Utah: Expect a drive of about 7-8 hours, typically involving I-80 East and then north on various state highways to US-20.
- From Yellowstone National Park: If you're coming from the eastern entrance of Yellowstone, the drive to Thermopolis is roughly 2.5-3 hours, following US-20 South.
When considering how to get to Thermopolis, remember that road conditions in Wyoming, especially during winter months, can be unpredictable due to snow and ice. Always check current weather and road reports before embarking on your journey. For those planning a broader adventure, Thermopolis makes an excellent stop on a USA Road Trip Planner itinerary, particularly if you're exploring the Best places in Wyoming. We also recommend considering a stop at Bighorn Canyon National Recreation Area or Bridger-Teton National Forest as part of a larger Wyoming adventure, both accessible from Thermopolis.
Parking in Thermopolis is generally easy, with free parking available at Hot Springs State Park and ample space at most attractions.
FAQ Longtails
Thermopolis with kids
Thermopolis is an excellent destination for families with kids! The primary draw is Hot Springs State Park, where children can enjoy the free public bathhouse (with adult supervision) and explore the accessible trails. The highlight for many kids is the Wyoming Dinosaur Center, which features numerous dinosaur skeletons and offers engaging "Dig for a Day" programs where children (ages 3 and up) can participate in fossil excavations. The park's resident bison herd also provides an exciting wildlife viewing opportunity. We recommend bringing swimsuits, sturdy shoes, and plenty of water for outdoor activities.
Best hotels near Thermopolis
The best hotels near Thermopolis often include those located directly within or adjacent to Hot Springs State Park, some of which feature their own mineral hot spring pools. Beyond these, you'll find a selection of comfortable national chain hotels and independent motels in town. For a more unique experience, consider local vacation rentals. We advise checking recent reviews and booking in advance, especially during the summer, to secure your preferred Thermopolis lodging.
Thermopolis tips
Our top Thermopolis tips include visiting the State Bath House early in the morning for a more tranquil soaking experience. Bring closed-toe shoes if you plan to participate in a "Dig for a Day" program at the Wyoming Dinosaur Center. For Legend Rock, always follow the specific "Legend Rock" signs rather than relying solely on GPS, and be sure to obtain a key and permit if visiting between October and April. Always carry water, wear sunscreen, and remember that bison are wild animals to be viewed from a safe distance. Don't forget to check for any current boardwalk closures at Hot Springs State Park.
Where to stay near Thermopolis
When deciding where to stay near Thermopolis, you have options ranging from hotels and motels within the town itself to private vacation rentals and nearby campgrounds. Several hotels are located conveniently close to Hot Springs State Park, offering easy access to the mineral springs. For those seeking a more rustic experience, various campgrounds and RV parks are available in Hot Springs County, though Hot Springs State Park itself is for day use only. We recommend exploring options that align with your travel style and budget, ensuring a comfortable base for your Thermopolis adventures.
Thermopolis parking
Thermopolis parking is generally abundant and free at most major attractions. At Hot Springs State Park, you'll find ample free parking areas conveniently located near the State Bath House, the Swinging Bridge, and other popular spots. Downtown Thermopolis also offers accessible parking for exploring local shops and restaurants. For the Wyoming Dinosaur Center and Legend Rock Petroglyph Site, dedicated parking is available on-site. No reservations are typically required for general parking.
Best time to visit Thermopolis
The best time to visit Thermopolis is typically from spring through fall (May to September) for pleasant weather and full access to all outdoor activities. Summer offers warm, sunny days ideal for exploration, though it's the busiest season. Spring and fall provide comfortable temperatures with fewer crowds. For a unique, cozy experience, visiting in winter allows you to enjoy the hot springs in crisp air, and you might even catch a bison feeding. The State Bath House is open year-round, except for Thanksgiving and Christmas.
Our team at Roam States believes Thermopolis, Wyoming, offers a truly unique and enriching travel experience. Its combination of world-class mineral hot springs, fascinating dinosaur history, and ancient cultural sites makes it a standout destination in the American West. Whether you're seeking relaxation, adventure, or education, Thermopolis delivers a confident and specific appeal that is far from generic. We highly recommend adding this gem to your Wyoming itinerary, perhaps as part of a larger journey through the state, including visits to destinations like the Buffalo Bill Center of the West.
Last updated: 2026-07-12 by the Roam States team.
Our Thermopolis guide covers practical planning for Thermopolis Wyoming — best time to visit, getting there, and what to do on the ground.
Nestled in the heart of Wyoming, Thermopolis is a hidden gem that beckons travelers with its unique blend of natural wonders and prehistoric history. Our team at Roam States has compiled this comprehensive guide to help you plan an unforgettable trip to this captivating destination. From the world’s largest mineral hot spring to fascinating dinosaur exhibits, Thermopolis Wyoming offers a distinctive experience that sets it apart from typical tourist traps.
Why Visit Thermopolis
Thermopolis, Wyoming, is a destination unlike any other, primarily celebrated for its extraordinary geothermal features. It's home to the world's largest mineral hot spring, a natural wonder that offers both relaxation and therapeutic benefits. The town's commitment to providing free public access to these healing waters is a testament to its welcoming spirit, ensuring that everyone can experience the unique sensation of soaking in mineral-rich pools. Beyond the rejuvenating hot springs, Thermopolis boasts a surprisingly rich paleontological history, with world-class dinosaur exhibits that transport visitors millions of years into the past. The surrounding Hot Springs State Park further enhances the appeal, offering scenic beauty, wildlife viewing, and opportunities for outdoor recreation. We believe Thermopolis offers a refreshing departure from overcrowded destinations, providing a genuine and enriching travel experience.
Who It's Best For
Thermopolis caters to a diverse range of travelers seeking a unique and relaxing getaway. It's an ideal destination for families, thanks to its engaging dinosaur museum and the accessible, family-friendly hot springs. History buffs and geology enthusiasts will find themselves captivated by the ancient petroglyphs and the geological marvels of the hot springs terraces. Those looking for a wellness retreat will appreciate the therapeutic qualities of the mineral waters and the serene atmosphere. Outdoor adventurers can enjoy the trails and wildlife viewing within Hot Springs State Park. Ultimately, Thermopolis is perfect for anyone who appreciates natural beauty, a touch of prehistoric wonder, and a slower pace of life, all without the usual tourist hustle.
Getting There & Parking
Reaching Thermopolis, Wyoming, typically involves a scenic drive through the vast landscapes of the state. While Thermopolis does not have its own major airport, several regional airports serve the wider area. The closest significant airports include Casper/Natrona County International Airport (CPR) to the south and Yellowstone Regional Airport (YRA) in Cody to the northwest. From these airports, you'll need to rent a car, which we highly recommend for exploring Thermopolis and the surrounding Hot Springs County at your own pace. Driving allows for flexibility and the opportunity to appreciate the expansive Wyoming scenery.
If you're planning a road trip, Thermopolis is conveniently located on US-20. It's approximately 84 miles south of Cody and 130 miles north of Casper on US-20 in Hot Springs County.
Once you arrive in Thermopolis, parking is generally straightforward and ample, especially at the main attractions. For Hot Springs State Park, free parking is available throughout the park grounds. You'll find designated parking areas near the State Bath House, the Swinging Bridge, and other points of interest. Similarly, the Wyoming Dinosaur Center and other local attractions typically offer convenient on-site parking. We found that downtown Thermopolis also provides accessible parking, making it easy to explore the local shops and eateries on foot. No advance reservations are required for parking at the State Bath House.
Top Things to Do
When considering things to do at Thermopolis, the town’s natural hot springs are undoubtedly the star attraction. However, the area offers a surprising depth of activities, making it a fantastic destination for all ages. Beyond the therapeutic waters, there are significant historical and paleontological sites that truly make Thermopolis a unique stop in Wyoming. This section will cover the top things to do at Thermopolis and within Hot Springs County, ensuring you make the most of your visit.
Hot Springs State Park
Hot Springs State Park is the crown jewel of Thermopolis and a must-visit. The park is home to the world's largest mineral hot spring, Big Spring, which produces approximately 3.6 million gallons of water per day at a source temperature of 127 degrees Fahrenheit. The park itself is free to enter, and the main attraction is the State Bath House. Here, you can enjoy a free 20-minute soak in indoor and outdoor pools, where the water is maintained at a therapeutic 104 degrees Fahrenheit. This free access is guaranteed in perpetuity by an 1896 treaty with the Shoshone and Arapaho tribes. The State Bath House is open Monday through Saturday from 8:00 AM to 5:30 PM and Sunday from noon to 5:30 PM, though it is closed on winter holidays and open noon to 5:30 PM on summer holidays.
Beyond the bathhouse, the park features impressive travertine terraces, formed by mineral deposits from the hot springs, which display vibrant colors from minerals and algae. While boardwalks typically allow close viewing of these formations, a full replacement project is underway through late August 2026, so we recommend checking conditions before planning your visit around them.
Another highlight within the park is the resident bison herd. The Hot Springs State Park bison herd serves as the central herd for all of Wyoming's state parks, with about 15 animals grazing in a fenced range. During colder months, you might catch a morning feeding around 8:30 AM. Remember that these are wild animals, and viewing should always be done from a safe distance, ideally from your vehicle.
Don't miss the iconic Swinging Bridge, a suspension footbridge over the Bighorn River, which offers unique views of the river and mineral terraces. The park also offers 6.2 miles of accessible trails, perfect for a leisurely stroll or a more invigorating walk. Hot Springs State Park is a day-use park, meaning no overnight camping is permitted.