Hotel underwater

As of 2005, the only hotel with an underwater room that can be reached without Scuba

diving is Utter Inn in Lake Mälaren, Sweden. It only has one room, however, and Jules Undersea Lodge in Key Largo, Florida, which requires Scuba diving, is not much bigger.

Hydropolis is an ambitious project to build a luxury hotel in Dubai, UAE, with 220 suites, all on the bottom of the Persian Gulf, 20 meters (66 feet) below the surface. Its architecture will feature two domes that break the surface and an underwater train tunnel, all made of transparent materials such as glass and acrylic.