2nd to last is great...love it. All of them are really good, actually. I truly feel the loneliness and torment that the building has. Very nice work. I'd love to see more in B&W if you have any
A few friends and I used to play paint ball at an abandoned mental hospital in Staten Island NY. These photos remind me of hunting down my enemies in halls very similar to those in your amazing shots.
On a serious note, one can only imagine the suffering that occured in these institutions and like Darnay said you captured it extremely well.