World’s tallest water slide Touted as the world’s tallest water slide, Schlitterbahn’s new Verruckt slide in Kansas City, Kan., will be measured today for the Guinness World Records. Expected to be present for this event are a judge from the Guinness World Records, Gov. Sam Brownback, Mayor Mark Holland and Schlitterbahn officials. The exact height of the new slide is expected to be revealed during the event.