Looks like a good area if you cut down some trees and drain it a bit.
One of the coolest places I've played was an old sawmill. It has two huge buildings, one rebuilt to a roofed speedball and the other one walled up with a lot of rooms inside. Outside there was a couple of old buildings and set buildings, much like what you want.
The big building was great for hostage scenarios and attack/defend and when you removed some wall sections it became part of the village outside.
The outside buildings were mostly build from the walls from an old go-cart track and wooden frames covered with tarps. They were mostly small oneor two rooms but there was two bigger buildings on each of the open sides, one of them was two floors, and there was and old shed, also two floors. They wanted to dig up a ditch running through the area to make a river/bridge type of thing but were kicked off the land by the owner before that.