While on an early morning wander in Dallas, I was stopped by a security guard outside of this building. He wanted to know what I was taking pictures of. I told him I was making images of the patterns and the light and shadows. He stood there for a minute, looking up at the building and finally said "What patterns?" I wasn't quite sure how to answer that question.
Images were created with the Canon 5D MK II and the Canon 24-105mm f/4.0L IS lens.