Tokyo Summerland is an amusement park that mainly has indoor and outdoor pools. It is a very popular spot for children and adults with a variety of aquatic attractions such as Japan’s largest flowing pool and a pool under a dome where you can play without worrying about the weather. Above all, the thrilling water attraction “DEKASLA”, where you are thrown into a large conical course and sucked into the center while sliding left and right. This attraction is sure to get everyone excited when you participate in a group.