Aquadom

The Aquadom is the largest (by volume) acrylic cylindrical aquarium in the world, with a diameter of about 11 m (36 ft), and it is built on a 9 m (30 ft) tall foundation.[http://www.reynoldspolymer.com/Portfolio…]. It was opened in 2004. Filled with 1,000,000 l (260,000 US gal) of water, it contains over 1,500 fish of 50 species. The feeding of the fish and the cleaning of the fish tank is performed daily by 3-4 divers. The fish need 8 kg (18 lb) of fish food. [http://www.visitsealife.com/Berlin/en/pl…]. The DomAquarée complex also contains a hotel, offices, a restaurant, and the aquarium Sea Life Centre.

Photo: https://commons.wikimedia.org/wiki/User:… https://en.wikipedia.org/wiki/User:Vxla…