Very different from the normal street shots we see so often. It's part of the well-known strategy Bob Krist talks about often; finding a cool local backdrop, wall, or building facade, and then waiting for people to come along and be photographed in front of said local architectural feature. The wall though is just..so..weird!
Yeah...I was thinking it was some avante-garde theatre building! Nicely seen sashbar! I can just barely see your reflection in the window of the second frame.