Paris' Ghost Stations

I have visited numerous cities around the world, but none like Paris. Paris' subway system is perhaps one of the most interesting, as it allows one to visit it's forgotten places in the shadow of the night. Unlike London, where every inch of track is secured by sensors and cameras, in Paris one is freely able to mind their photographic exercises.

Disclaimer: I do not suggest anyone running around rails that are not only dangerous through trains but invisible currents from this rails and loose gravel.