The Helsinki metro celebrated its 25th anniversary in August 2007. The metro started test operation on 1 June 1982 and was officially opened on 2 August 1982.
The planning process took over ten years amid heated debate and opposition. Today passengers on the metro are some of the happiest travellers on public transport. The metro takes them quickly and punctually from one side of the city to the other.
When it first opened in 1982 the metro only ran between Itäkeskus and Rautatientori. The years that followed saw more stations added and the track extended: Kamppi station was opened in 1983, Sörnäinen in 1984, Myllypuro and Kontula in 1986 and Mellunmäki in 1989. New stations were also opened in the 1990s: Ruoholahti, Kaisaniemi, Puotila, Rastila and Vuosaari.
After Vuosaari, the pace of metro construction slowed. The next new station did not appear on the scene until early 2007, with the opening of Kalasatama between Kulosaari and Sörnäinen.
The metro is set to take its next great leap forwards on the completion of the the long-planned Western Metro Extension. The aim is for the metro line to Matinkylä in Espoo to open to traffic in autumn 2014.