The Rade de Cherbourg, boasting a massive 1,500 hectares, is the world's second-largest man-made harbor. Construction began in 1783, with the central dike completed in 1853 and three forts added by 1860. The East dike, stretching 4 kilometers from the coast, was built between 1890 and 1895. The harbor offers a wide central passage (700 meters) and a western passage (1,100 meters), maintaining a minimum depth of 13 meters even at low tide. Visitors can explore La Cité de la Mer, a science and history museum housed in a former maritime terminal, featuring Titanic exhibits and access to France's first nuclear submarine, Le Redoutable. Art enthusiasts can delve into the Musée Thomas-Henry's collection of paintings from the 15th to 19th centuries. For a taste of local life, visit the Place de Gaulle Market on Tuesdays, Thursdays, or Saturdays. Nightlife options include Le QG, a bar with live music and dancing, and Le Why Not, a discotheque known for its friendly atmosphere and shuttle service.