Kotor is a coastal town in Montenegro. It is located in a secluded part of the Gulf of Kotor. The city has a population of 13,510 and is the administrative center of the municipality. The old Mediterranean port of Kotor is surrounded by fortifications built during the Venetian period. It is located on the Bay of Kotor (Boka Kotorska), one of the most indented parts of the Adriatic Sea. Some have called the southern-most fjord in Europe, but it is a ria, a submerged river canyon.