The Cité de la Mer ("city of the sea") is a maritime museum in Cherbourg, France. The museum is in the cruise terminal of Cherbourg. This monument was built in 1933; it's one of the bigger art-deco monument of today. It was opened in 2002 as a scientifical and historical museum, around four axes: the Redoutable, first SNLE submarine of the French Navy, now a museum and the largest submarine in the world open to the public a permanent exposition a cylindrical aquarium, 8 metre wide and 10 metre high, which displays the successive marine life forms according to the depth a great hall where temporary expositions are held a new underwater expedition in a virtual, digitised building