Allegheny County PA Archives- Photos: Alcoa Building and Mellon Park, Pittsburgh, Allegheny County, PA Contributed for use in the USGenWeb Archives by: Ellis Michaels , Jan 2012 Copyright 2012. All rights reserved. http://www.usgwarchives.net/copyright.htm http://www.usgwarchives.net/pa/allegheny/ ________________________________________________ http://files.usgwarchives.net/pa/allegheny/photos/alcoabldg-pittsburgh.txt Photo may be viewed at: http://www.usgwarchives.net/pa/allegheny/photos/alcoabldg-pittsburgh.jpg Postcard, ca. 1970 Alcoa Building and Mellon Park, Pittsburgh, Allegheny County, PA The huge Alcoa Building was the first aluminum skyscraper in the world. It is the headquarters of the Aluminum Company of America. In the foreground is Mellon Square with its beautiful trees, erupting fountains and unusual flowers. Below the park is a six level underground parking garage.