The submarine base at Zanjice was one of the most strategically important military installations in the former Yugoslavia. Built during the height of the Cold War, the base was carved directly into the limestone cliffs of the Lustica Peninsula, with tunnels wide enough and deep enough to accommodate full-size combat submarines. The facility could house hundreds of sailors, store torpedoes and equipment, and operate entirely independently for extended periods.

After the dissolution of Yugoslavia, the base was abandoned and eventually opened to visitors. Today it stands as one of the most atmospheric and thought-provoking abandoned sites in the Balkans — vast, concrete, echoing, and extraordinary. Reaching it requires a boat, making it one of the best-kept secrets on the Montenegrin coast.

Barbarosa Boat Tours departs daily from Kotor. Book your Submarine Tunnel Tour today and explore a chapter of European history that most people never knew existed.