Miyazaki, Miyazaki, Japan there lies a stunningly beautiful beach where you can sunbathe, swim and play in the sand. It 'also sports a fake, the flame exploded volcano. Oh yes, and it is closed. Seagaia Ocean Dome is the largest indoor water park in the world, which is 300 meters long, simple, great beach and 100 meters wide. It has its own entrance, listed in the Guinness Book of Records the largest indoor water park.