One time when I was a kid I got smacked upside the head for asking if I could build the world’s largest water park 300 meters from a natural beach. Well, as it turns out maybe it wasn’t such a crazy idea after all.

Located in Miyazaki, Japan the Ocean Dome measures 300 meters long, 100 meters wide and the temperature is around 30C. The surf kicks up every hour for a few minutes just after the volcano erupts. The entrance fee is around $24.

Here’s a link to more pics http://www.alltraveltips.com/oceandome.html