This series, which spotlights the world's best waterslides, opens with a look at the Insano in Fortaleza, Brazil, which stands at 135 feet tall. Also: an indoor, near-vertical looping slide in Vermont; an indoor bungee jump into water at the Center of Gravity in Edmonton.

Area 47, an outdoor playground located at the base of the Australian Alps, is visited. Also: a look at the Constrictor at Wet 'n Wild in Phoenix and the Bomb Bay at Wet 'n Wild in Orlando.

Some of the world's tallest and fastest waterslides are spotlighted in Brazil, Texas and Germany.

The world's tallest raft ride in Venice, Italy; The Master Blaster in Texas; the only slide in the world that runs through a rain forest.

Germany's Tropical Islands, a giant indoor water park housed in an old blimp hanger, is visited. Also: waterslides in Denver and San Antonio are spotlighted.

Ride the tallest halfpipe in the world at Aquatica in Texas. Then slide, dive and swing into New Jersey's Mountain Creek Waterpark. Finally, brave the world's only double looping water slide at Wave Water World in Austria.

We're trotting the globe and riding the world's most extreme water rides. From the world's tallest slide in Brazil to the world's largest indoor waterpark in Germany - we're getting wet and counting down the world's best rides.