The world's largest building implosion to date occurred 30 October 1994 at the Sears complex in the Northeast section of Philadelphia, a site which is incidentally mere blocks from the origin point of Quondam - A Virtual Museum of Architecture.
051030a plan of Center City Phila. mirror copied along the axis of Market St.
051030b 051030a scale manipulated
051030c 051030a mirror copied along the axis of Broad St.