right|thumb|The Walls of Dubrovnik are a series of defensive stone walls, never breached by a hostile army, that have surrounded and protected the maritime city-state of Dubrovnik (Ragusa), situated in southern Croatia.
right|thumb|The Walls of Dubrovnik are a series of defensive stone walls, never breached by a hostile army, that have surrounded and protected the maritime city-state of Dubrovnik (Ragusa), situated in southern Croatia