World's First Artificial Sea Beach In Japan - The Japanese built cool beach is just a huge Ocean Dome (approximately 6 football pitches, it can house 10,000 tourists), that allows everybody to lie on the artificial beach, among artificial palm-trees and enjoy the sound of artificial tide. The world’s largest artificial sea washes over the biggest indoor beach, fringed with fake palm trees and other eye-popping innovations that have given a holiday make-over to old Mother Nature.