The fortress Arza, east of the island of Mamula, at the very end of the southwestern part of the Luštica peninsula, rests on the foundations of an ancient fortress, from which some fragments of larger amphorae and vessels are preserved. In the geographical triangle, the Fortress on the cape Ostro on the Prevlaka peninsula (which lies on the west side of the entrance to Boka Bay, which belongs to Croatia) – the fortress Mamula (Lastavica) – fortress Arza, the entrance to Boka was strategically closed completely. Today these fortifications await adaptation and new tourist valorization.
Across the road of the beach with the same name, there is an islet – Žanjic , also called the Little Lady on which is the church of St. Presentation. This ridge can easily be reached by swimming or by kayak. The kind priests will gladly tell you about the history of the island dedicated to the Mother of God.