The fortification with the yard, today known as the tower Rotonda, was built in 1508 by Stjepan Stafileo on a rock embedded in the sea, as protection against the Turks. He had a grapestaphile (greek) carved into his seal. Next to the castle a fortified village was established, surrounded by a channel and a moveable bridge with protection towers, of which one is still preserved in it's original form. People from the area of Bijaci settled here.