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. Helsinki has a population of 621,523,an urban population of 1.2 million, and a metropolitan population of 1.4 million, making it the most populous municipality and urban area in finland. Helsinki is located some 80 kilometres north of tallinn, estonia, 400 kilometres east north east of stockholm, sweden, and 300 kilometres west of saint petersburg, russia. Helsinki has close historical connections with these three cities.