Great thread, PA Pride! I have many fond memories of Pittsburgh, and Oakland is one of my favorite parts of the city. One would never realize just how much great architecture there is at street level until you are on foot and exploring every nook and cranny. It's been quite a while since I have been to PGH and I still have many friends there, so I think I am due for a trip soon...
The Cathedral of Learning is fantastic and while I was at an event there many years ago, I went to one of the top floors to explore it a little more. I went into the bathroom and they had the window open, so I stuck my head out and looked straight down...it was incredible! But of course I did not have my camera with me, and this was long before the days of smart phones and when I had a camera on me at all times.