Allegheny County PA Archives- Photos: Civic Arena, 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/civicarena-pittsburgh.txt Photo may be viewed at: http://www.usgwarchives.net/pa/allegheny/photos/civicarena-pittsburgh.jpg Postcard, ca. 1970 Civic Arena, Pittsburgh, Allegheny County, PA Public Auditorium-Pittbugh, Pa. The world's largest movable dome, as seen from the visitors observation promenade deck atop the Gulf Building. The all- purpose sports arena, convention hall and auditorium- theater, built at a cost of 22 million dollars is one of America's engineering wonders. The huge stainless steel roof, weighing more that 3,653 tons, can be rolled back in two and one-half minutes, for open air events such as operettas.