List of tenants in One World Trade Center

The North Tower (also known as Tower 1, Building One, or 1 WTC) was one of the twin towers of the original World Trade Center in New York City. It was completed in 1972, standing at a height of , and was the tallest building in the world until being surpassed by the Sears Tower in Chicago in 1973. It was distinguishable from its twin, the South Tower, by the  telecommunications antenna on its roof. Including the antenna, the building stood at a total height of . The building's address was 1 World Trade Center, with the WTC complex having its own ZIP code of 10048. The North Tower and its twin were both destroyed in the terrorist attacks of September 11, 2001; the North Tower was the first of the towers to be struck by a hijacked aircraft, at 8:46 a.m EDT, and it collapsed at 10:28 a.m. Of the 2,977 victims killed in the attacks, 1,402 were in or above the North Tower impact zone. The North Tower was replaced by the present-day One World Trade Center tower, which was opened in November 2014 as the lead building of the redeveloped World Trade Center site.