June 25, 2026
Celebrate National Waterpark Day in Wisconsin Dells!
What better way to beat the summer heat than with a splash at a waterpark? This summer, we invite you to join us in celebrating National Waterpark Day in Wisconsin Dells on Tuesday, July 28. Did you know the holiday started right here? That’s right – Kalahari Resorts & Conventions founded it in 2017, making this year the 10th anniversary! Since then, it has brought even more families together for splash-filled summer experiences.
Why Celebrate in Wisconsin Dells?
There’s no better place to celebrate National Waterpark Day than the “The Waterpark Capital of the World!®" Wisconsin Dells not only has more waterparks per capita than anywhere else in the world – it was the birthplace of the indoor waterpark concept (which debuted at the Polynesian Hotel Wisconsin Dells in 1989).
With over 200 waterslides and attractions powered by 16+ million gallons of water, there’s something for everyone, from experienced thrill-seekers to those who prefer a more laid-back splash. And these aren’t just any waterparks. In Wisconsin Dells you’ll find…
- Wisconsin’s Largest Indoor Waterpark: Kalahari Resort Waterparks
- America’s Largest Outdoor Waterpark: Noah’s Ark Waterpark
- America’s Largest Indoor/Outdoor Combination Waterpark: Wilderness Resort Waterpark
- America’s Largest Inflatable Waterpark: Land of Natura
- America’s Tallest Waterslide: Mt. Olympus Water & Theme Park
Waterparks to Visit
Here are some of the top outdoor waterparks in Wisconsin Dells to put on your summer bucket list:
1. Kalahari Resort Waterparks
Celebrate National Waterpark Day at Kalahari Resort Waterparks with sunshine, slides, and special waterpark activities like parties, games, and prizes galore! Mark your calendars and save big during Kalahari’s National Waterpark Day flash sale. The resort was just named #1 Best Indoor Water Park in the 2026 USA TODAY 10 Best Readers’ Choice Awards! And it doesn’t stop there…this fall the Kalahari will open a new 75,000-sq.-ft. addition to its indoor waterpark!
2. Noah’s Ark Waterpark
Noah’s Ark Waterpark features over 70 acres of waterslides, rivers, and wave pools – leaving no room for question of how it got the title of America’s Largest Outdoor Waterpark. Visitors can try heart-pounding rides like the 10-story-tall Scorpion’s Tail, the plunging Point of No Return, or the twisting Black Anaconda. For those looking for a more relaxing experience, sit back and kick your feet up in areas like the Endless River and Kahuna Wave Pool. Noah’s Ark Waterpark was recently named the #3 Best Outdoor Water Park in the 2026 Newsweek Readers’ Choice Awards, adding another reason to make it part of your Wisconsin Dells getaway.
3. Mt. Olympus Water & Theme Park
For a mix of wet and dry thrills, head to Mt. Olympus Water & Theme Park. This all-day outdoor adventure palace features wave pools, roller coasters, go-karts, and waterslides galore. Dare to conquer America’s Tallest Waterslide, the 146-ft.-tall Rise of Icarus (which was just named one of USA TODAY’s 10 Best Water Slides for 2026.) You can also take on the powerful Poseidon’s Rage wave pool or cool off in the serene Pool of Delphi area. Don’t miss Medusa’s Slidewheel, the first rotating waterslide in the U.S. It combines the sensations of a Ferris wheel and a waterslide into one wild ride.
4. Land of Natura
More fun awats at Land of Natura, America’s Largest Inflatable Waterpark. This unique eco-adventure park – recently named the #1 Best Outdoor Water Park in the 2026 Newsweek Readers’ Choice Awards – offers a one-of-a-kind outdoor waterpark experience. It’s water features float on Lake Wisconsin Dells, the largest man-made, naturally filtered lake in the world. Jump, swing, and climb on the inflatable play structures or race down Mount Natura on a waterslide. You can even snorkel or catch rays on a real sand beach! New this year is the undulating Wibit Wave slide and the Lady Bug Splashpad, great for the youngest kids in the family.
5. Wilderness Resort Waterpark
With four indoor and four outdoor waterparks, Wilderness Resort is one of the largest waterpark resorts in the U.S. Its 70,000-sq.-ft. Wild Waterdome Waterpark showcases the largest indoor wave pool in the country and a state-of-the-art “tan-through” roof. Additionally, Klondike Kavern hosts a large indoor waterpark, featuring a multi-level play and spray feature for younger guests. Wilderness Resort also has multiple outdoor options, including the “lazy lake” pool at Lake Wilderness with a lounging island in the middle, as well as tube and body slides of varying thrills and sizes.
6. Chula Vista Resort
Take on the fun at scenic riverside Chula Vista Resort, Its 120,000-sq.-ft. Adventure Lagoon outdoor waterpark boasts thrills like Howlin’ Tornado and Red Rock Racers. The wave pool is also a must-visit, as it is nestled amongst the pine trees with a scenic view of the Wisconsin River. The Lost Rios indoor waterpark offers something for everyone – from a racing water slide to a relaxing river.
7. Great Wolf Lodge
Gather your pack and visit Great Wolf Lodge’s indoor and outdoor waterparks, full of activities for all ages. Explore the Raccoon Lagoon, perfect for splashing and soaking up the sun. For the more adventurous members of the party, check out Howlin’ Tornado, a raft adventure with twists, turns, and splashes that will have you howling with delight.
Tons of Fun, No Matter the Size
Wisconsin Dells is also home to many hotels and resorts with smaller waterparks and water activities, perfect for delivering big fun for families with little kids. These cozy getaways offer junior slides, splash pads, and water features galore! Plus, their convenient size makes them perfect for those who need a break back at the room between all the fun!
See the full list of properties with water activities in Wisconsin Dells here.
Updated: 07/16/2026
