See all Attractions in Cherbourg Cherbourg for: Adventure, Food And Dining, Art And Culture, Nightlife, Spa, History, First Timers, Family, Romance, Shopping Cité de la Mer About The Cité de la Mer is an aquarium situated in the restored trans-Atlantic railway terminal in Cherbourg. Visitors can explore an ocean diving area and a former French Army submarine. The monument was built in 1933 and the museum was opened in 2002. Add to Wish List