Hello! I am an avid watcher of the Pittsburgh falcons and just wanted to clarify some information about the nesting sites. While the information posted is correct, it actually refers to the nest at the Gulf Tower. Information about the nest at the Cathedral of Learning (pictured), as well as other sites around Pittsburgh, can be found in this document compiled by Kate St. John:
http://www.aviary.org/cons/FalconCam/PeregrineFalcon_History.pdf