Kotor is a coastal town in Montenegro with a population of about 13,500. It is well-known for its World heritage medieval structures (including churches and fortifications) and its stunning natural setting at the very edge of the mountain-rimmed Kotor Bay. It is situated in a most secluded tip of Boka Kotorska bay, in the northern part of the Montenegro coast on the Adriatic Sea. Kotor has developed around Stari Grad (local language for "old town"), the city's old town and best known landmark, which is listed with UNESCO World heritage sites. Kotor Bay is the deepest natural fjord-like bay in the Mediterranean Sea, and the scenery around it (including the steep mountains which come almost straight down to the waters edge) is spectacular.