Lights on the Stockholm metro in Sweden which has become the world’s longest art gallery over the years. Started back in the 50′s, it houses an incredible amount of underground artworks in 90 of its 100 stations. All photos were taken by IT architect and photographer Alexander Dragunov who is passionate with subway photography. We especially like the dramatic red sky created in the 70′s by artists Anders Aberg and Karl-Olov Bjork in the cave-like station of Solna Centrum. Enjoy!