1. Seagaia Beach, Japan
Seagaia Beach is located in Japan. Ocean Dome Seagaia is a part of the Japanese Sheraton Seagaia Resort. It is an artificial beach, which can accommodate up to 10,000 visitors. It stretches 300 meters long and 100 meters wide. The air temperature is always maintained at 30 degrees Celsius, and the water temperature is 28 degrees. Built-in imitative volcano is periodically making waves for surfers to ride. Also in bad weather an artificial roof rises, that provides the sunny sky.