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History: Collapse of the World Trade Center, September 11, 2001, Lower Manhattan, New York City, United States
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History: Collapse Of The World Trade Center, September 11, 2001, Lower Manhattan, New York City, United States

Complex
• North and South towers
With the construction of 7 World Trade Center in the 1980s, the World Trade Center had a total of seven buildings, but the most notable were the main two towers. Each stood over 1,350 feet (410 m) high, and occupied about one acre (43,560 square feet) of the total 16 acres (65,000 m2) of the site's land. During a press conference in 1973, Yamasaki was asked, "Why two 110-story buildings? Why not one 220-story building?" His response was: "I didn't want to lose the human scale."
When completed in 1972, 1 World Trade Center (the North Tower) became the tallest building in the world for two years, surpassing the Empire State Building after a 40-year reign. The North Tower stood 1,368 feet (417 m) tall and featured a telecommunications antenna or mast that was added at the top of the roof in 1978 and stood 360 feet (110 m) tall. With the 360-foot (110 m)-tall antenna/mast, the highest point of the North Tower reached 1,728 ft (527 m). 2 World Trade Center (the South Tower) became the second tallest building in the world when completed in 1973. The South Tower's rooftop observation deck was 1,362 ft (415 m) high and its indoor observation deck was 1,310 ft (400 m) high. The World Trade Center towers held the height record only briefly: Chicago's Sears Tower, finished in May 1973, reached 1,450 feet (440 m) at the rooftop. Throughout their existence, however, the WTC towers had more floors (at 110) than any other building. This number was not surpassed until the advent of the Burj Khalifa, which opened in 2010.

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Album name:World & Travel
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Keywords:#history #collapse #world #trade #center #september #lower #manhattan #new #york #city #united #states
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Date added:Sep 11, 2014
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