Helsinki is the capital and largest city of Finland. It is in the region of Uusimaa, located in southern Finland, on the shore of the Gulf of Finland, an arm of the Baltic Sea. The population of the city proper of Helsinki is 602,200 (31 August 2012), making it by far the most populous municipality in Finland. Helsinki is located some 80 kilometres (50 mi) north of Tallinn, Estonia, 400 kilometres (250 mi) east of Stockholm, Sweden, and 300 kilometres (190 mi) west of Saint Petersburg, Russia. Helsinki has close historical connections with these three cities. Helsinki Metropolitan Area includes the city of Helsinki and three other municipalities: Espoo and Vantaa, which immediately border Helsinki to the west and north, respectively; and Kauniainen, which is an enclave within the city of Espoo.
Contributions by Gillis, JIP, and Tpienonen.