At Siam Park in Tenerife, often voted the world's best water park, height requirements are strictly enforced for safety, generally falling into three main categories. For the most extreme "Adrenaline" rides like the Tower of Power, the minimum height is 1.40 meters (4'7"). For the majority of the popular family and group slides—including The Dragon, The Volcano, Singha, and Kinnaree—the minimum height is 1.25 meters (4'1"). A third tier for gentler attractions like the Mekong Rapids and the Jungle Snake requires kids to be at least 1.10 meters (3'7"). For children who do not meet these requirements, the park features massive dedicated zones: The Lost City and Sawasdee, which have no minimum height and feature smaller versions of the adult slides. Additionally, the Mai Thai River (lazy river) and the Siam Beach wave pool are accessible to all, though children under 1.10m must wear a life jacket on the river. It is best to measure children at the entrance to get a wristband, which saves time at the individual slide entrances throughout the day.