Arza Beach

Arza sits at the southern tip of the Lustica peninsula, where the bay finally opens out to the Adriatic. The area draws visitors chiefly for the Yugoslav-era submarine tunnels carved into the cliffs, built during the Cold War to shelter navy vessels and now open to boat tours, but a small, rocky pebble beach also sits at the mouth of the tunnel complex, serving as a short swim stop on the standard Lustica boat tour from Herceg Novi. The beach is compact, roughly 40 metres of pebble and flat rock ledges. There are no facilities: no loungers, no beach bar, no shade.

Most visitors arrive as part of a day boat tour that pauses here for 20 to 30 minutes of swimming before continuing along the coast to Žanjic or the Blue Grotto. The exposed position means water runs two to three degrees cooler than the beaches inside the bay, where Igalo and Topla benefit from the sheltered inner basin. Underwater visibility runs high thanks to the open-sea exposure and minimal sediment. The cliffs adjacent to the cove drop away quickly into deep water, drawing free divers and underwater photographers.

The submarine tunnel entrances are accessible to tour boats and on foot along the shoreline from the Arza fortress ruins above. The old fortress itself is partially accessible and offers the best elevated view of the southern bay mouth.