Verrückt, Schlitterbahn Located in Kansas City Water Park in Kansas, Verrückt Schlitterbahn is the tallest water slide in the world standing nearly 170-feet-high. It is an extreme thrill ride in every since of the phrase. Verrückt in German means insane. The creators and whoever rides its have to be a little out of their minds. The slide is higher than Niagara Falls and is as long as two football fields. The slide shoots daredevils down massive drops including a 60 degree free fall right out of the gate.