The AquaDom breaks all records as the largest cylinder aquarium in the world, at over
52 feet in depth by 36 feet in diameter. This engineering marvel is located in Berlin and took
150 tons of acrylic to complete. 

The AquaDom in Berlin, Germany, is a 25 meter tall cylindrical acrylic glass aquarium
with built-in transparent elevator. It is located at the Radisson SAS Hotel in Berlin-Mitte.
The DomAquarée complex also contains a hotel, offices, a restaurant, and the aquarium
Sea Life Center. The AquaDom was opened in December 2003. It cost about 12.8 million
euros. The acrylic glass cylinder was constructed by the U.S. company Reynolds Polymer
Technology. The outside cylinder was manufactured on-site from four pieces; the inside
cylinder for the elevator was delivered in one piece. The AquaDom is the largest acrylic
glass cylinder in the world, with a diameter of over 11 meters, built on a 9 meters tall
concrete foundation. Filled with about 900,000 liters of seawater, it contains some 2600
fish of 56 species. The feeding of the fish and the cleaning of the fish tank is performed
daily by a pair of full-time divers.