Woolworth Building Iron Work (1912)

At the time of its completion in 1913, the Woolworth Building was the tallest in the world. This image of the partially completed building shows the interior ironwork that supports the structure, a building technique that made tall buildings possible.

Credit: Irving Underhill, photographer. 4 April 1912; from Photographic views of the construction of the Woolworth Building, 233 Broadway, New York City; in the collection of the New York Public Library [source].

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