@Walt: Honestly I don't know I looked at the original and it could possibly be a reflection from the other side of the buliding , but then again the angle looks right for the roof to be gone as well .....
Umph! Who would of thought that a corner of a building could be so intriguing?
"Rapunzel, Rapunzel, let down your hair"
Do you think this could be the tower she was kept in? C2 :)