ZEN DEVILS - Obscure ninja madness !!

 
Here is the final Part 03 of an abandoned sanatorium near Paris that I explored last month.
This huge sanatorium was built in the early 1930's for massive tuberculosis treatment. It was turned into a concentration camp in the early 1940's. It was then turned into an hospital until the late 1980's. It has since been looted and left in decay.

Have you ever done any urbex explorations ? If so, which places ?