It is one of the most iconic photographs of all time but as it celebrates its 80th anniversary it has emerged that ‘Lunch atop a Skyscraper’ may not have been as impromptu as previously thought. Archivists say the shot showing 11 construction workers enjoying their break on a suspended beam, high above the streets of Manhattan, was in fact a publicity stunt. Although the models were real workers, the moment was staged by the Rockefeller Center to promote their new skyscraper 80 years ago today. The claim is supported by a second - and rarely seen - image from the same organised shoot which shows the crew in a different pose lying down on the girder.