Photos: One World Trade Center towers over NYC

Ironworkers wait for the final piece of the One World Trade Center spire to be raised into position for attachment to the building in New York on Friday, May 10. The 408-foot spire brings the building to a height of 1,776 feet, making it the tallest in the Western Hemisphere.

Ironworkers wait for the final piece of the One World Trade Center spire to be raised into position for attachment to the building in New York on Friday, May 10. The 408-foot spire brings the building to a height of 1,776 feet, making it the tallest in the Western Hemisphere.