Thermopolis vs Big Splash, Billings
A side-by-side look at two water parks — rides, prices, amenities, and which one fits your trip.
Which Park Is Right for You?
Quick verdicts based on what each park offers.
Amenities Compared
What each park offers, side by side.
| Feature | Thermopolis | Big Splash, Billings |
|---|---|---|
| Parking |
Only at Thermopolis
- hot tubs
- swimming pool
- gift shop
Only at Big Splash, Billings
- wave pool
- water slides
- kids area
- splash pad
- cabana rentals
- food court
- tube rentals
- birthday party packages
Both parks share 1 amenities including Parking.
About Each Park
Thermopolis
Wyoming
Thermopolis Hot Springs State Park is Wyoming's hidden gem that combines natural mineral hot springs with family-friendly water activities. This isn't your typical chlorinated water park - you're soaking in naturally heated mineral water that bubbles up from deep underground at a consistent 104 degrees year-round. The main attraction is the Star Plunge, where you can swim laps in the large indoor pool or relax in the outdoor soaking pools while snow might be falling around you. The contrast is pretty surreal. The indoor pool area has a vintage 1980s vibe that feels authentically retro rather than run-down. Kids love the smaller warm pools where they can actually stand and play comfortably. The outdoor terraced pools are where you'll want to spend most of your time - they're built right into the natural rock formations and offer different temperature zones. Start in the hottest pools up top and work your way down as you acclimate. The whole setup overlooks the Bighorn River, and you can watch rafters float by while you soak. This place works best for families looking for a unique, low-key experience rather than adrenaline junkies wanting massive slides. It's perfect for multi-generational trips since grandparents can relax in the warm water while kids splash around safely. The mineral content is supposed to be therapeutic - locals swear by it for sore muscles and joint pain. Arrive early in summer since it gets busy with tourists, and bring water shoes because the concrete around the pools can get…
Read the full Thermopolis guide →Big Splash, Billings
Montana
Big Splash at The Bighorn Resort gives Billings families a solid water park experience without the overwhelming crowds you'd find at mega-parks. The wave pool here is the main draw, generating decent-sized waves that kids love to jump in while parents can actually relax nearby without losing sight of them. The water slides range from gentle slopes perfect for younger kids to a few steeper drops that'll get your heart pumping, though don't expect record-breaking heights or complex tube rides. What I really appreciate about Big Splash is how well-designed the kiddie area is. The splash pad has colorful water features at toddler height, and there's enough shallow water play that parents can sit right at the edge while little ones explore safely. The layout makes sense too - you're never walking forever between attractions like at some poorly planned parks. Since this is part of The Bighorn Resort, everything feels well-maintained and clean. The staff keeps a good eye on safety without being overly strict about every little thing. Food options are typical water park fare, but the portions are decent and prices aren't completely outrageous. I'd recommend arriving when they open, especially on hot summer weekends, to claim your spot and avoid the afternoon rush. Bring reef-safe sunscreen because Montana sun at this altitude can sneak up on you fast. The park works best for families with kids under 12 - teens might get bored after a few hours since there aren't any major thrill rides. But for…
Read the full Big Splash, Billings guide →Ready to visit Thermopolis?