#11 Seagaia Ocean Dome, Japan
Seagaya Ocean Dome was located in Miyazaki, Japan. The huge indoor beach and water park was conceived by the Mitsubishi Heavy Industries group and cost $1.8 billion in 1993. It was a bold investment. Seagaya Ocean Dome offers a beach experience in the environment. It was one of the most iconic wave pools ever built for surfing.
Its roof is designed to let natural sunlight in. The pool offers spectacular views, a great option to relax from the stress of everyday routine. It was one of the largest indoor waterparks in the world.