Imagine a person inside, screaming yet nobody can hear him. Maybe not physically screaming, just screaming in one's mind.
He is looking outside, wandering, wanting, yet he cant go outside. It is forbidden.
Everything is so nice and orderly, yet it seems like there is more chaos outside the building. Like the inside is the only sane place left, and the people themselves are going insane.
Can't really describe it but the feeling and what I imagine is very poweful.
It's amazing that there's such a stark contrast between the tree & the sterile looking building. This photo really caught my attention while browsing your fantastic gallery (you are a gifted photographer) because the composition is so simple & clean. It's incredible how one thing like that tree can bring a sense of life into to a dead environment. I also agree that B&W was the perfect choice but then again I think B&W photography is your forte.