Yellow Springs, Ohio
Antioch College has closed down; I don't know if the four or five signs on every street and building entrance stating that no unauthorized motor vehicles were to go any further and that the entire area was under constant surveillance were because they've already had trespassing and vandalism issues or what. It did make it that much more creepy and unnerving though.
This building, the main hall it appears, was gorgeous, like a big brick castle, but it would have been a prime candidate for a group I run on Flickr called "Poor Arboreal Planning." This was really the only decent view of it I could get because of all the trees run rampant.
Four Tops - Keeper of the Castle