There are some waterslides you won’t believe exist. Whether it’s Insano at Beach Park in Brazil (which is 14 stories high), Summit Plummet at Disney’s Blizzard Beach (which can carry riders at speeds of up to 60 miles per hour) or Dawwama at Yas Waterworld in Abu Dhabi, United Arab Emirates, these are some of the tallest waterslides in the world, some of the scariest waterslides in the world, and some of the coolest waterslides in the world. WatchMojo counts down ten of the craziest waterslides in the world.