Ocean Dome – world’s largest indoor water park !!..
Its the world’s largest indoor water park, located at Miyazaki Japan, which is a part of the Sheraton Seagaia Resort, measures 300 meters in length and 100 meters in width, and is listed on the Guinness World Records. It opened in 1993, and visitor numbers peaked in 1995 at 1.25 million a year.

The air temperature was always held at around 30 degrees celsius and the water at around 28.

See…. how much of work can be done with the technology!!.. even a natural Ocean can be simulated. The Ocean Dome… well done engineers!!.