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One World Trade Center (WTC 1), the "North Tower", was, at 1,368 ft (417 m), six feet taller than Two World Trade Center (WTC 2), the "South Tower", which was 1,362 ft (415 m) tall. Numerous closely spaced perimeter columns provided much of the structural strength, along with gravity load shared with the steel box columns of the core. [23]
In addition to the Twin Towers, the plan for the World Trade Center complex included four other low-rise buildings, which were built in the early 1970s. The 47-story 7 World Trade Center building was added in the 1980s, to the north of the main complex. Altogether, the main World Trade Center complex occupied a 16-acre (65,000 m 2) superblock.
At the time of their completion the "Twin Towers"—the original 1 World Trade Center (the North Tower), at 1,368 ft (417 m), and 2 World Trade Center (the South Tower)—were the tallest buildings in the world. The other buildings in the complex included the Marriott World Trade Center (3 WTC), 4 WTC, 5 WTC, 6 WTC, and 7 WTC.
New York City took the brunt of the death toll when the Twin Towers of the World Trade Center complex in Lower Manhattan were attacked, with an estimated 1,600 victims from the North Tower and around a thousand from the South Tower. Two hundred miles southwest in Arlington County, Virginia, another 125 were killed in the Pentagon.
World Trade Center. At 8:46am, an American Airlines plane crashed into the North Tower of the World Trade Center. ... Fires from the crashes at the Twin Towers, made worse by the planes’ ignited ...
Spectators look up as the World Trade Center goes up in flames September 11, 2001 in New York City after two airplanes slammed into the twin towers in an alleged terrorist attack.
Sustained heavy damage in the collapse of 1 and 2 World Trade Center 54+ Did not collapse, but was declared destroyed. [6] 4 World Trade Center: Lower Manhattan, New York City 1975 Destroyed Heavily damaged by debris from the collapse of 2 World Trade Center 2 Did not collapse, but was declared destroyed. [7] 5 World Trade Center
A "bucket brigade" works to clear rubble and debris after the September 11 attacks. The September 11 attacks on the World Trade Center elicited a large response of local emergency and rescue personnel to assist in the evacuation of the two towers, resulting in a large loss of the same personnel when the towers collapsed.