H2-WHOA, Peoria

Taking a dip in the nearest body of water is a must come summer's scorching temps, but H2-WHOA redefines the word "dip". That's because its 32-foot high, 80-foot long slides, each ending in a ramp of varying steepness, rocket swimmers up into the air before plummeting them into the cool depths of Lake Pleasant below. The towering colossus is designed for thrill-seekers, letting them catch massive air, flipping and twisting off one of H2-WHOA's three connected slides. And safety is of high priority here too, with every guest required to wear a life jacket and a resident lifeguard sitting watch.