6. Porte Molitor

Porte Molitor before its abandonment, Image via Wikimedia Commons. 

Not far from the abandoned Piscine Molitor, the swimming pool of Life of Pi fame, is the abandoned subway station, Porte Molitor. According to Urban Ghosts Media, the station was built in the early twentieth century but never used, full platforms “that have never served a single passenger.” The station was intended to serve the Parc des Princes station but today is used to store trains when the metro system is closed. There were no entrances built from street level or walking tunnels, so the photographer (Patch) who photographed the station had to bypass “intense security measures” in the underground network.