One World Trade Center

Associated Press
The final piece of spire is hoisted to the roof of One World Trade Center, Thursday, May 2, 2013 in New York.  The piece will be attached to the spire at a later date, capping off the tower at 1,776 feet. (AP Photo/Mark Lennihan)

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A spire was fully installed atop One World Trade Center on May 10, bringing the New York City structure to its symbolic height of 1,776 feet. It will serve as a world-class broadcast antenna and also as a beacon to ward off aircraft. The building is at the northwest corner of the site where the twin World Trade Center towers were destroyed in the Sept. 11, 2001, terrorist attacks. (AP)

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