Petrovac is a very old town. Based on archaeological finds, you can set that in place today Petrovac in Roman times there was a settlement, which is likely to constitute a staging post on the Roman road along the Adriatic coast.
Although the town is like a small village, Petrovac has an interesting history. It was first mentioned in chronicles of the XII century under the name Lastva, and also in the Charter of King Milutin from 1308.
Petrovac is known as a resort summer tourism, as well as Roman mosaics III century, which shows the god of sleep Hypnos. Urban beach about 600 meters long and is one of the most beautiful in this part of the Adriatic. Petrovac named the place after the First World War King Peter I of Yugoslavia.