It is probably a photographer thing, but sometimes I see something, and I just have to take a thousand photographs of it to capture how interesting it is or the cool way it looks. This is particularly true when I see really interesting architecture with interesting lines or reflections or curves or whatever. The Comcast Center in Philadelphia was one such building because of the way it almost disappeared into the sky. PPG Place in Pittsburgh is another such piece of architecture. It is not so much the shape of the buildings, but it is the way they reflect the buildings around them that I find so interesting. I love reflections. I love photographing reflections. I also love how somewhat similar to Comcast Center, it almost blends into the sky by reflecting the blue. So while in Pittsburgh, I took a huge number of photographs of PPG Place because I was just so intrigued and captivated by the way it reflected its surroundings.