19 June 2005, Gamla Stan T-bana station, Stockholm, Sweden
A northbound tunnelbana (metro) train of SL's modern C20 type; if my research is correct then the front trainset is no. 2269 "Måns" which is distinguished by its advertisement. Unfortunately the LCD destination indicators the train is equipped with don't photograph well so I can't reconstruct the line or destination of the train.

The picture is taken from the northbound platform of Gamla Stan station, southern end; the view is along the T-bana bridge over Söderström towards Slussen station, with the city district of Södermalm in the background. On the right edge of the picture you can see the road bridge called Centralbron. Photo by Sven Manias (sven.manias@gmx.de)