Avalanche Bay

Embrace the indoors at water parks that keep the thrills and spills coming all year long.

Avalanche Bay, Boyne Falls, MI

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When the clock tower chimes at this quirky Alpine village–like water park, the four-story Splasherhorn playhouse dumps an 800-gallon liquid “avalanche” on the “streets,” building fronts, and citizens below. The adventurous can ascend a climbing wall while water pours down from above or go boogie boarding on the Rip Zone Surf Simulator. avalanchebay.com

indoor water park at Avalanche Bay in Boyne Falls, MI

America's Coolest Indoor Water Parks

Avalanche Bay, Boyne Falls, MI

When the clock tower chimes at this quirky Alpine village–like water park, the four-story Splasherhorn playhouse dumps an 800-gallon liquid “avalanche” on the “streets,” building fronts, and citizens below. The adventurous can ascend a climbing wall while water pours down from above or go boogie boarding on the Rip Zone Surf Simulator. avalanchebay.com

Avalanche Bay

America's Coolest Indoor Water Parks

Endless summer—that’s the promise of indoor water parks. And with it come surfing contests hundreds of miles from an ocean, waves lapping at pools the size of small lakes, and bright beach towels spread over lounge chairs as snow falls outside the windows.

The coolest indoor water parks keep kids of all ages entertained, from Idaho to Texas to New Hampshire. While some also have outdoor rides that close at summer’s end, nothing can slow down the splashing excitement inside, where air temperatures remain between the high 70s and high 80s year round.

Related: World's Craziest Waterslides

Arcades, spas, ziplines, and ski gondolas are often part of the experience, too. Wings & Waves in McMinnville, OR, even has a real airplane on the roof and an attached aviation and science museum. The wilder slides and tube rides—with names like Tanzanian Twister and Howlin’ Tornado—generally have minimum-height restrictions, and all provide life jackets for younger children.

All big indoor water parks have several pools and many slides of different heights and lengths, so we looked for those with something special or unusual. Minnesota’s Water Park of America’s 90-foot-tall Eagle’s Nest Tower anchors four wild slides—one stretching more than a mile—while in Wisconsin, the Klondike Kavern’s Hurricane shoots riders up for a moment of weightlessness.

Read on to find a cool indoor water park near you.

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