The AquaDom is a breathtaking cylindrical glass aquarium located inside the Radisson Blu Hotel in Berlin-Mitte, Germany. It is within the DomAquarée complex which houses a hotel, a restaurant, offices and the aquarium Sea Life centre. Visitors can watch the feeding of the fish and the cleaning of the fish tank performed by divers every day. The AquaDom is the largest cylindrical tank in the world, containing 1,500 tropical fish of 97 species, coral reef in over 1 million litres of water.
Images: Radisson Blu Hotel Berlin, Wikipedia