U-434 (SUBMARINE MUSEUM)

This former Soviet submarine has been transformed into a museum, and it is worth a visit because it is the largest submarine in the world not equipped with nuclear weapons. Destined for espionage, it was in operation until April 2002 before being sold by the Russian Navy. You can visit it from top to bottom and discover how it works and learn more about the Spartan life on board a submarine. Its history also takes us back to the turmoil of the Cold War.