I watched this one recently and enjoyed it. It's about the subculture of people who explore abandoned buildings, sewers, etc. as a hobby. A lot of them tend to be photographers, so part of the appeal is sneaking into off-limits places to take photographs. Some highlights were: an abandoned NASA rocket silo, the catacombs under Paris, an abandoned mental hospital is Scotland, and Xanadu (Home of the Future) in Orlando before it was demolished!
I have always been into exploring abandoned places, but never really gave it much thought that there are organized communities that do this (as in they have online forums where they trade info, pics, video, discuss safety precautions and codes of ethics, and have "stars" who are well-known in the community). If you're into visiting the old prison farm and the like, I think you'll like this one.
Urban Explorers: Into the Darkness
