00:00Ladies and gentlemen, welcome to the Willis Tower, the third tallest building in the United States.
00:06It is a skyscraper located in Chicago, USA, built in 1974 with a total height of 527 meters.
00:14It is the tallest building in Chicago and one of the tallest buildings in the world today.
00:30It is the tallest building in the world today.
01:00It is the tallest building in the world today.
01:10It is the tallest building in the world today.
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