A pretty cool elementary school I explored whilst over in the States last October, located in upstate New York. I always wanted to see an American school, preferably one of the massive high schools but this was a worthy backup having failed to see any of them. Cutlers Elementary (not it's real name) closed a few years ago and has been left to rot since. The older end of the building has suffered catastrophic water damage and has subsided badly, but the more modern extension on the other end is relatively sound.
It was a nice chilled wander local to where I was staying which is a win-win