Petrovac is located on the coast of the Bay, which is the gaze of the tourist scenic and lush landscape. The city resembles an amphitheatre as built on top of a slope small hotels, cottages and villas, surrounded by pine and olive. Full name of the city in Petrovac-on-sea.

In the III century BC the town was located a Roman settlement, details of which is mentioned for the first time in a priest's "the Chronicles Dukhanina". These references are dated by the middle of the XII century. Its current name Petrovac was only in the twentieth century, although the town was founded in the nineteenth century.

In the composition of Montenegro for a long time he was called Kastel Lastva because built here in the XVI century Venetian fortress called Castio. Subsequently, the structure was planned to use as a plague hospital.

The fortress of Kastio is located in the Northern part of the beach. Upper site of the ancient fortress is now a memorial where you can see a plaque with a dedication to fallen soldiers of Montenegro and in particular the residents of Petrovac in the Second world war. Above the fortress flying the flag, the symbol of independence of Montenegro.