Balchik is a seaside resort, situated terrace-like on a small bay on the Black Sea, 31 km North of Varna, 37 km south-east of Dobrich and 500 km East from Sofia. Third in significance Bulgarian port after Varna and Bourgas, Balchik is used for medium-size passenger and trade vessels. Population of 13 500. It springs to life towards the end of the 6th C. B.C. as the ancient Greek colony Crunoi (later Dionysopolis) in place of a Chalcolithic (4th-3rd millennium B.C.) and a Thracian (1st millennium B.C.) settlement.