One World Trade Center
Iron worker Tyler Brown leans on a safety fence and looks out over New York after watching a crane lift the final piece of the spire onto the top of the city's One World Trade Center.
Workers cheered and whistled as they completed the spire, raising the building to its full height of 1,776 feet and helping fill a void in the skyline left behind by the September 11, 2001 attacks.
Before: The Twin Towers of the World Trade Center stand tall above the city the month before the September 11 attacks.
After: Eleven years later, the One World Trade Center partially fills the gap in the skyline left by the fallen Twin Towers.
Pedestrians turn to look down Fulton Street as the final piece of One World Trade Center's spire is hoisted up.
Iron workers photograph the crane lifting up the final piece of spire.
Workers applaud after taking a group photograph on top of the building.
An iron worker reaches out to touch the final piece of spire before it is raised up into position.
Workers gesture as the final section of the spire is lifted by a crane.
A U.S. flag flutters in the wind as the piece of spire is lifted up.
Iron workers watch the crane.
The piece of spire dangles in the air.
A view from the top of One World Trade Center shows the New York skyline stretching into the distance.
Workers stand in a shaft of sunlight on the 105th floor of the building.
Graffiti covers a steel girder on the 105th floor.
Members of the media take pictures of New York through the windows of the 100th floor observation deck.
A worker wipes down a window on the 100th floor before a press conference.
Members of the media are reflected in the windows of the observation deck.
A view from the One World Trade Center at sunrise shows New York bathed in hazy yellow light.
