Bases/Bunkers/Installations in Belleville, Ontario, Canada or surrounding area?

I've been reading threads on hear about secret bases/installations etc. and I'm interested in knowing what they are for and what goes on. I live in Belleville, Ontario, Canada and was wondering if anyone knows of any spots around the area where I might be able to find such a place. I realize there is the Trenton Air Force Base, but that is not a huge concern to me right now. If anyone could shed some light on this, it would be greatly appreciated.