#21 A steelworker balances carefully on a girder during the Empire State Building construction in New York City.
 
                
                
                
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                #22 The photo depicts ironworkers enjoying lunch on a girder twenty stories high, seemingly unbothered by the drop below.
 
                
                
                
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                #23 Members of a derrick gang are fixing a beam during the Empire State Building's construction, with the bustling streets of New York far beneath them.
 
                
                
                
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                #24 A worker hired for repainting the iconic Eiffel Tower is pictured seated high up on the structure, with a paint bucket secured to his belt.
 
                
                
                
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                #25 Workers labor on a New York skyscraper, circa 1950.
 
                
                
                
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                #26 A construction worker sits on a scaffold, gazing over the expansive New York skyline.
 
                
                
                
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                #27 A team of riveters is seen securing a massive girder during the Paramount Building's construction.
 
                
                
                
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                #28 Circa 1930: Builders are diligently working on a skyscraper in New York.
 
                
                
                
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                #29 A workman is painting the Eiffel Tower in Paris, October 1969.
 
                
                
                
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                #30 Men are shown 500 feet up Blackpool Tower, performing necessary repairs.
 
                
                
                
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                #31 A photographer precariously balances eighteen stories above Fifth Avenue, using a stereoscopic camera to capture images of the city.
 
                
                
                
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                #32 A photographer balances eighteen stories above Fifth Avenue while he uses a stereoscopic camera to take pictures of the city.
 
                
                
                
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