>>45245422I can relate. It's one of my favorite kinds of obsessive, autistic knowledge-gathering that hijacks my attention. I see a photo of a city skyline, or some industrial park, and I'm always trying to guess which city it is. Neighborhoods are impossible, but some cities are pretty recognizable, even in their less-photographed places. Even cities you might think have a similar feel, e.g. Dallas, Houston and Atlanta.