Helsinki is the capital and largest city in 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 of Helsinki is 588,941 (31/01/11), making it by far the most populous municipality in Finland.
Helsinki is Finland's major political, educational, financial, cultural and research centre as well as one of northern Europe's major cities. Approximately 70% of foreign companies operating in Finland have settled in the Helsinki region.
In 2009, Helsinki was chosen to be the World Design Capital for 2012 by the International Council of Societies of Industrial Design. Helsinki narrowly beat out Eindhoven for the title. (source)
Thank you Juho!