Helsinki Metro

Helsinki metro is the world is most northern metro system, and the only one available in Finland. The Helsinki Metro links the city center to the eastern suburbs (21 km - 17 stations, two branches). 4.9 km are in a tunnel through the city center. Total length 21.1 km The system was opened to the general public on 1982. It is operated by Helsinki City Transport for Helsinki Regional Transport Authority and carries 62 million passengers per year.