 Sandcastle Waterpark is also home to slides like the world's longest indoor roller-coaster water slide, the Master Blaster, and the first vertical indoor drop slide Sidewinder.Family attractions include the Ushi Gushi Action River, the Shimmering Shallows and the Typhoon Lagoon Wavepool.For younger visitors there is a Caribbean Storm Treehouse which is an interactive adventure play area with a giant tipping coconut that cascades 600 gallons of water over unsuspecting guests.