Hydropolis Dubai.
The Hydropolis Underwater Hotel and Resort is a proposed to be the world’s first underwater luxury resort in Dubai. The hotel design was created by Joachim Hauser and Professor Roland Dieterle, and is planned to be composed of three segments: a land station, a connecting train, and the underwater hotel. A self acclaimed 10 star hotel will be located 66 feet below sea level inthe Persian Gulf. It will cost an estimated $300 million.