Under Montana’s Big Sky is its relatively laidback Big Sky Waterpark. While not very large, it’s the only place in Montana where you can ride on giant slides and float along a lazy river. Picnic tables and snack bars are scattered about the property, and dry-land fun includes bumper cars, arcade games, mini golf and beach volleyball. Located near Glacier National Park, visitors to the park receive discounted tickets to the water park. Big Sky Water Park is open from June through Labor Day.