If you are fascinated by the sea and its mysteries, Cherbourg-en-Cotentin is the perfect destination for you. This French port city has a rich maritime heritage, from its role in naval battles and transatlantic voyages, to its exploration of the underwater world. You can visit the Cité de la Mer, a museum and aquarium that showcases the history and science of the sea, including a submarine and a Titanic exhibition. You can also admire the architecture and culture of Cherbourg, with its Italian-style theater, its basilica, and its art and history museums. Don't miss the Ravalet castle, a Renaissance gem surrounded by beautiful gardens.