Mark Lennihan
The silver spire topping One World Trade Center is lifted as it is fully installed on the building's roof, bringing the structure to its full, symbolic height of 1,776 feet, May 10, 2013. The 408-foot spire, weighing 758 tons, will serve as a world-class broadcast antenna.
Julio Cortez/AP
One World Trade Center stands at its full height above the New York City skyline in this view from the Heights neighborhood of Jersey City, N.J., May 10, 2013.
Mark Lennihan/AP
The final piece of spire is hoisted to the roof of One World Trade Center in New York, May 2, 2013.
Ironworkers will install the sections at a later date and when complete, One World Trade Center will stand 1,776 feet high, making it the tallest building in the Western Hemisphere.
Mark Lennihan/AP
The final piece of spire is hoisted to the roof of One World Trade Center in New York, May 2, 2013.
Stan Honda/AFP/Getty Images
Construction workers watch as the final sections of the spire is raised to the top of One World Trade Center in New York, May 2, 2013.
Stan Honda/AFP/Getty Images
The final section of the spire is raised to the top of One World Trade Center in New York, May 2, 2013.
It will be attached to a temporary work platform atop the structure. Ironworkers will install the sections at a later date.
Stan Honda/AFP/Getty Images
Construction workers watch as the final sections of the spire is raised to the top of One World Trade Center in New York, May 2, 2013.
Stan Honda/AFP/Getty Images
Construction workers watch as the final sections of the spire is raised to the top of One World Trade Center in New York, May 2, 2013.
Spencer Platt/Getty Images
An iron worker holds a rope as the 408-foot spire is hoisted onto a temporary platform on the top of One World Trade Center in New York on May 2, 2013.
Spencer Platt/Getty Images
Workers fit supports to the final two sections of a 408-foot spire that will be hoisted to a temporary platform on the top of One World Trade Center in New York on May 2, 2013.
Stan Honda/AFP/Getty Images
People watch as the final sections of the spire is raised to the top of One World Trade Center in New York on May 2, 2013.
Mark Lennihan/AP
A worker holds a guide rope as the final piece of spire is hoisted to the roof of One World Trade Center in New York on May 2, 2013.
Spencer Platt/Getty Images
The 408-foot spire is viewed as it is hoisted onto a temporary platform on the top of One World Trade Center in New York on May 2, 2013.
Julio Cortez/AP
A 408-foot spire is lifted toward the top of the construction of One World Trade Center in New York, seen from the Heights neighborhood of Jersey City, N.J., Thursday, May 2, 2013.
Seth Wenig/AP
The top piece of the 408-foot spire for One World Trade Center is lifted to the top of the building in New York, May 2, 2013.
Seth Wenig/AP
The top piece of the 408-foot spire for One World Trade Center is lifted to the top of the building in New York on May 2, 2013.
Mark Lennihan/AP
Workers attach a harness to the final piece of spire before it is hoisted to the roof of One World Trade Center in New York on May 2, 2013.
Seth Wenig/AP
The top piece of the 408-foot spire for One World Trade Center in New York is lifted to the top of the building on May 2, 2013.
Mark Lennihan/AP
A close-up of the top piece of the 408-foot spire for One World Trade Center is shown at ground level in New York, May 1, 2013.
Mark Lennihan/AP
Construction workers watch as the final piece of spire is hoisted to the roof of One World Trade Center, New York on May 2, 2013.
Mark Lennihan/AP
The top piece of the 408-foot spire for One World Trade Center in New York is shown at ground level, May 1, 2013.
Mark Lennihan/AP
Workers attach a harness to the final piece of spire before it is hoisted to the roof of One World Trade Center in New York on May 2, 2013.
Mark Lennihan/AP
A worker holds a guide rope as the final piece of spire is hoisted to the roof of One World Trade Center in New York on May 2, 2013.
Mark Lennihan/AP
Ironworker Tommy Hickey holds a guide rope as the final piece of spire is hoisted to the roof of One World Trade Center in New York on May 2, 2013.
CBS News
"CBS Evening News" anchor Scott Pelley and leaders of the Port Authority of New York and New Jersey look north from the roof of One World Trade Center on April 25, 2013.
CBS News
"CBS Evening News" anchor Scott Pelley signs a steel beam on the roof of One World Trade Center on April 25, 2013.
