Fort Royal, Military fortress on Lokrum Island, Croatia.

Fort Royal is a fortification on the highest point of Lokrum Island. Its interior has a curved vaulted stone ceiling, a straight flight of stone steps with a thin metal handrail leading to a raised platform, and a lower wall of rectangular stone blocks with two small square openings. Above this wall are four arched openings, two with bright rectangular windows and two dark.

French forces built the fort in 1806 during their occupation of the region to defend the coastal area. Austrian forces later added defensive installations to strengthen the position, reflecting its continued strategic value.

The fortress forms part of a broader network of military structures that protected Dubrovnik and its maritime trade routes through centuries.

The fort stands on the highest summit of Lokrum Island, reached by a marked path from the ferry landing; the final stretch is a climb, so wear sturdy shoes. The chamber shown has a sandy floor and a stone stair with a metal handrail leading to a raised platform.

The fort stands on the highest summit of Lokrum Island, at 42.62997, 18.11674, above the Dubrovnik channel. Its interior is a stone chamber with a vaulted ceiling, a straight flight of stone steps with a thin metal handrail rising to a raised platform, and two small square openings in the lower wall. The floor is flat and sandy, with a dark rectangular patch at its centre.