Tallinn is the capital and largest city of Estonia. It occupies an area of 159.2 km2 (61.5 sq mi) with a population of 414,940. It is situated on the northern coast of the country, on the banks of the Gulf of Finland, 80 km (50 mi) south of Helsinki, east of Stockholm and west of Saint Petersburg. Tallinn's Old Town is in the list of UNESCO World Heritage Sites. It is ranked as a global city and has been listed among the top 10 digital cities in the world. The city is a European Capital of Culture for 2011, along with Turku, Finland. In 1154 a town called Qlwn or Qalaven (possible derivations of Kalevan or Kolyvan) was put on the world map of the Almoravid by cartographer Muhammad al-Idrisi who described it as a small town like a large castle among the towns of Astlanda. It has been suggested that the Quwri in Astlanda may have denoted the predecessor town of today's Tallinn. The earliest names of Tallinn include Kolyvan (Russian: ) known from East Slavic chronicles, the name possibly deriving from the Estonian mythical hero Kalev. Up to the 13th century the Scandinavians and Henry of Livonia in his chronicle called the town Lindanisa: Lyndanisse in Danish,Lindanäs in Swedish, also mentioned as Ledenets in Old East Slavic. According to some theories the name derived from mythical Linda, the wife of Kalev and the mother of Kalevipoeg. who in an Estonian legend carried rocks to her husband's grave that formed the Toompea hill.