Rodolphe Foucher c/o Andrea Heberger was busy with her camera on Stockholm's subway stations. The Stockholm subway system is the only of its kind in Sweden. Since many stations are decorated with artwork, it is considered one of the largest art galleries in the world. In 1957, T-Centralen became the first station to be artistically designed after a competition. Meanwhile, more than 90 of the 100 stations contain artworks by over 150 artists.