On the way to the Blue Cave, just as you reach the entrance of Boka Bay, there’s a small circular island that always catches people’s attention — Mamula Island.
From the boat, you’ll spot an old stone fortress sitting right in the middle of it. It dates back to the 19th century, when this part of the coast was under Austro-Hungarian rule. It looks almost like something out of a movie — quiet, a little mysterious, and surrounded by deep blue water.
But Mamula isn’t just beautiful scenery. During World War II, the fortress was used as a prison, which gives the island a much heavier, more complex history. Today, it stands as one of the most intriguing landmarks at the entrance of the bay.
What makes this part of the tour really special is the sudden change in landscape. As you leave behind the calm, sheltered waters near Kotor and Perast, everything opens up. The sea gets deeper, the cliffs become more dramatic, and you can feel the shift as Boka Bay meets the Adriatic.
Passing by the island is one of those moments where everyone on the boat slows down, looks around, and reaches for their camera. Between the fortress, the rugged coastline, and the open sea stretching ahead, it’s easily one of the most photogenic spots on the Blue cave tour.
