In the summer of 2001, Torsten Andreas Hoffmann, examining new photographs he had taken for a calendar illustrated with views of New York, determined that he had too many photographs of the World Trade Center. After Sept. 11, he reconstructed the view, angle and detail of these earlier photographs to be able to compare the view "before" (photographed in black and white) and "after" (photographed in color). Pictures of Ground Zero are explicitely not included.