
The best indoor water parks all have one great thing in common: they're weather-proof. Even if it's raining or snowing outside, they consistently hover around a balmy 84 degrees. But there's a lot more to love about these aquatic playgrounds, because they're often attached to resorts with themed guest rooms and other family-friendly activities. Whatever your reason for going, here are eight indoor water parks you can splash into all year long.

Claim to fame: It's part of the largest family of indoor water parks in the United States (there are 12 others).
What's inside: A four-story treehouse with a 1,000-gallon tipping bucket, six water slides, two jumbo hot tubs, safe play zones for kids, a wave pool, and a lazy river.
Most extreme water slide: The Howlin' Tornado, a six-story funnel that swirls riders 30 feet up the sides in a four-person raft.
Does it offer day passes?: You must be a hotel guest to gain entrance to the park.
Hotel perks: A spa and kids' spa, numerous dining options, and themed guest rooms with bunkbeds.

Claim to fame: It was named one of America's coolest indoor water parks by Conde Nast Traveler.
What's inside: A 50,000-gallon Flowrider, 10 water slides, indoor and outdoor hot tubs, safe play zones for young kids, a wave pool, and a lazy river.
Most extreme water slide: The Zip Coaster, a roller coaster-water slide hybrid that propels riders through free falls and turns at speeds of up to 20 miles per hour.
Does it offer day passes?: Yes
Hotel perks: A safari-themed animal park, mini bowling and mini golf, an arcade, numerous dining options, and suites that comfortably sleep up to 36.


Claim to fame: This is said to be North America's largest indoor water park, and it was named one of the 10 best indoor water parks in Canada by TripAdvisor.
What's inside: 16 waterslides, Hot Springs Horseshoe whirlpool, a wave pool, an outdoor sundeck with a pool, a splash park, and a tipping bucket.
Most extreme water slide: Ride by yourself or with your friend down the Toob Tower, where you can choose from four different routes.
Does it offer day passes?: Yes.
Hotel perks: Guests of the Skyline Hotel & Waterpark have access to the Fallsview Indoor Waterpark. Shop for deals at the Skyline Hotel here.
H2Oooohh Indoor Water Park | Lake Harmony, PA

Claim to fame: H2Oooohh features the state's first indoor Flow Rider boardsport facility, so you can practice surfing in the Poconos.
What's inside: Three water slides, a wave pool, Jungle Play area, the Oasis snack shack, and the Leapin' Lillypads crossing area.
Most extreme water slide: This water park features three different water slides, each 4-stories tall.
Does it offer day passes?: Yes
Hotel perks: The water park is connected to Split Rock Resort. Look into the resort's "Splash and Stay" package for discounted admission to H2Oooohh.


Claim to fame: It's the largest indoor water park in the United States.
What's inside: Five water slides, an adults-only hot tub, safe play zones for young kids, a gentle wave pool, and a lazy river.
Most extreme water slide: The Hurricane Vortex, a whirlpool slide that ends with a plunge into the lazy river.
Does it offer day passes?: You must be a hotel guest to gain entrance to the park.
Hotel perks: An 8,000-square-foot arcade, an arts and crafts room with daily activities, numerous dining options, and tropical-themed rooms and suites.
Maui Sands Resort & Indoor Waterpark| Sandusky, OH

Claim to fame: The Maui Wowie Bowl Slide, where you'll brave the conditions inside a massive bowl before a final drop into the water below.
What's inside: Two half-pipe body slides, two tube slides, a treehouse play area, water basketball hoops, lazy river, kiddie pool, and a vortex pool.
Most extreme water slide: The Hammerhead Plunge, a winding, twisty slide that reaches speeds of up to 45 mph.
Does it offer day passes?: Yes
Hotel perks: Many rooms at Maui Sands come with water-park passes. Inquire with the hotel to ensure a special rate.

Claim to fame: It's the tallest indoor water park in the United States.
What's inside: A Flowrider that moves at up to 30 miles per hour, a multi-story fort with a 500-gallon tipping bucket, four water slides, a hot tub, a wave pool, and a lazy river.
Most extreme water slide: The Eagle's Nest, a five-story body slide that begins on the 10th floor and ends in a giant pool.
Does it offer day passes?: Yes
Where to stay: There's no hotel attached to the indoor water park, but you can stay right across the street at Radisson Hotel Bloomington by Mall of America. Search coupons for Radisson here.

Claim to fame: It's home to the largest wave pool in the eastern United States.
What's inside: A five-story tiki treehouse with a treetops ropes course and giant tipping bucket, eight water slides, three hot tubs, a safe play zone for young kids, a wave pool, and a lazy river.
Most extreme water slide: The Hurricane Hole, a whirlpool slide that reaches speeds of up to 40 miles per hour.
Does it offer day passes?: Yes
Where to stay: There are three hotels attached to Erie PA water park: a Holiday Inn Express & Suites, a Residence Inn by Marriott, and a Comfort Inn & Suites. Find other nearby hotels in Erie here.

Claim to fame: It's Michigan's largest indoor water park.
What's inside: Five water slides, two hot tubs, safe play zones for young kids, an indoor surfing wave, a wet climbing wall, and a lazy river. Oh, and a "water avalanche" that dumps 800 gallons every 15 minutes.
Most extreme water slide: The Vertigo Slide, a tube slide that shoots riders into a giant whirlpool.
Does it offer day passes?: Yes
Hotel perks: A ski hill, ziplines, horseback rides, a 36-hole golf course, and chalet-like guest rooms.
Photo: Courtesy of Avalanche Bay Indoor Water Park
What's the best indoor waterpark you've ever been to?