This property is located at 30 1/2 Langdon Ave. I never stepped foot inside. I couldn't get inside, but I was told theres a window that you can hop through. I'd recommend bringing a mask if you decide to go inside, looks moldy. No signs seen anywhere on this property advising it to be private property, and no "No trespassing" signs either.
I have no idea what this building was originally used for.
Address
30 1/2 Langdon Ave
Concord, NH 03301
Photos attached on Imgur:
http://imgur.com/a/eW9me