The rebuilding effort in Downtown Manhattan reached new heights this week as construction crews laid steel beams for the 100th floor of One World Trade Center.
The total number of floors include the tower's reinforced base.
The milestone leaves the skyscraper just four feet short of becoming the tallest building in the city.
Publisher Conde Nast has signed an agreement to move their offices into the tower.
The skyscraper will stand 104 stories when it opens next year and its total height, including the spire, will be 1,776 feet.