Skyscrapers in the United States

The Frost Bank Tower is a skyscraper in Downtown Austin, Texas, United States. Standing 515 feet (157 meters) tall and 33 floors, it is the third tallest building in Austin, behind the 360 Condominiums and the Austonian. It was developed by Cousins Properties from November 2001 to December 2003 as a class A office building. It was the first high-rise building to be constructed in the U.S. after the 9/11 attacks. The building was officially dedicated in January 2004.

One World Trade Center (also known as the Freedom Tower,[12] 1 World Trade Center, One WTC and 1 WTC) is the main building of the rebuilt World Trade Center complex in Lower Manhattan, New York City. It is the tallest building in the Western Hemisphere, and the sixth-tallest in the world. The supertall structure has the same name as the North Tower of the original World Trade Center, which was completely destroyed in the terrorist attacks of September 11, 2001.

Willis Tower, formerly named Sears Tower, is a 108-story, 1451-foot (442 m) skyscraper in Chicago, Illinois. At the time of its completion in 1974, it was the tallest building in the world, surpassing the World Trade Center towers in New York. Currently, Willis Tower is the tallest building in the United States and the fifth-tallest freestanding structure in the world as well as the fifth tallest building in the world to the roof.