Sea-Globe
Kinda like a life size snow-globe, but much better - SeaGaia Ocean Dome - "Ocean Dome is listed in the Guinness Book of World Records as the world’s largest indoor water park, measuring 300 meters in length, 100 meters in width. And the temperature is 30 degrees Celsius year-round. When you walk in, you are greeted by a beach of pure white sand and a paradise of eternal Summer."