(see other picture first)
I can see how it might be easy breaking into one of these abandoned facilities, but this one is right next to an active prison.

I found that this stairwell looks pretty close to the one P-Head walks down when you first defeat him/her/it.

Character: Pyramid Head Series: Silent Hill Photo Views: 1300 Upload Date: 06-16-2005

Photographer: Cosplayers: