When you google what is the most famous skyscraper in the world, the first one that comes up is the Sears Tower! (Willis tower now).
Sears Tower, is a 108-story 442 meters (1,450 ft) skyscraper in Chicago. At the time of its completion in 1973 it was the tallest building in the world, surpassing the WTC towers in New York. The observation deck is located on the 103rd floor of the tower and is one of the most famous tourist attractions in Chicago.
What is your favorite Skyscraper in the world?