1. AquaDom: World's Largest Cylindrical Aquarium
Combined with a vast amount of sandblasted glass, the giant AquaDom gives a transparent-like feeling to the lobby. Guests and visitors are able to travel through the aquarium in a glass-enclosed elevator to reach a sightseeing point and restaurant under the glass roof. Two full-time divers are responsible for the care and feeding of the fish and maintenance of the aquarium. The AquaDom was opened in December 2003. It cost about 12.8 million euros.