Bruce: No fill flash. In fact I rarely use flash in any of my photos. I guess the building was light enough for the shot. I see what you are talking about; it could have so easily been ruined. I'm lucky I guess!
JonK: Oh no, horses in a factory! *glue*
Actually this was at the horse show, part of the Houston Livestock Show and Rodeo. Each of those gates are temporary horse stalls set up in the arena.
I guess the title popped into my head because I entered the building and came around the corner and here was this exact scene.