Hotel that Houses the World's Largest Cylindrical Aquarium with Over 1,500 Fish

A hotel in Berlin decided to welcome its guest with the world's largest cylindrical aquarium that boasts more than 1,500 tropical fish of 56 species. The aquarium, dubbed Aquadom, is can be found in the Radisson Blu Hotel. It is filled with 260,000 gallons of water and features a mini reef that serves as the base.

Two full time scuba divers work in the tank, taking care of the fish and their habitat. Besides being able to observe the tank from any angle, guests also have the opportunity to ride the elevator that runs through a tube in the center of the cylindrical aquarium. The elevator takes guests up to a viewing platform located just under the glass roof of Radisson Blu.

Probably the most interesting thing is that the aquarium was not built inside the hotel - the latter was constructed around the already existing aquarium.