One World Trade Center is officially taller than the Willis Tower in Chicago, which had been the tallest building in the country since it was completed — and named the Sears Tower — in 1974.
One World Trade Center, which will debut in 2014, is still under construction. However, a majority of the structure is complete. It has 94 floors above ground , five floors below and 71 elevators with a top speed of 10.16 meters per second.
The Empire State Building was named after New York, "The Empire State".This skyscraper was the world´s tallest building for 40 years, until the completion of the World Trade Center (Twin Towers) 1n 1970.
The Chrysler Building was completed in 1930. It was briefly the tallest building in the world until the Empire State Building opened in 1931.
The Woolworth Building, which was completed in 1913, was the tallest building in the world until the Chrysler in 1930. One of the curious things about this building is that it was paid in cash.
The Flatiron Building is a 22- storeyed limestone structure resembling an iron. In 1902 it was one of the first skyscrapers.
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