Lunch atop a skyscraper Wall Art Print While New York's thousands rush to crowded restaurants and congested lunch counters for their noon day lunch, these intrepid steel workers atop the 70 story RCA building in Rockefeller Center get all the air and freedom they want by lunching on a steel beam with a sheer drop of over 800 feet to the street level. The RCA building is the largest office building in terms of office space in the world. (original caption). Image taken 9/20/32; filed 9/29/32. Width: 30 inches Height: 24 inches View photos for further details.