Mighty ramparts surround the Old Town of Ulcinj. The fortress is located on a high rocky cape on the Adriatic coast. In the eastern part of the city there is the castle of Kalaj, in the northern wing are the gates of the fortress, which were the only entrance to the city from the mainland. Archaeological and Ethnographic Museums operate in the Old Town. The dominant feature of the castle and the entire Old Town is the Balsić Tower, which houses an art gallery. Next to the tower is the building of the former Catholic Cathedral of the Virgin Mary, which in the medieval period housed the Episcopal Cathedral (today the cathedral houses the Archaeological Museum). On the south side of the Old Town of Ulcinj there is a bay, which borders on the south with the cape Rastislav, where there is a small town beach.