One of the things that nearly everyone seems to forget about Pittsburgh is that is was once one of the single largest business and manufacturing cities in the country, if not the world. Some of the world's richest men lived and worked in Pittsburgh, including Andrew Carnegie, Andrew Mellon, H. J. Heinz, and George Westinghouse, to name a few. Nikola Tesla spent some time here, as well. Many streets are named after industrialists, which adds a unique flavor.
If anything, Pittsburgh's recent rise is a return to success.