The Willis Tower, also known as the Sears Tower, is one of the tallest buildings in the world! ๐
๏ธ It stands in Chicago, Illinois, and has 110 floors, reaching a height of 1,451 feet (about 442 meters). Built in 1973, this skyscraper was the tallest building on Earth for 25 years! It has a special design that helps it withstand strong winds. The Willis Tower is made of strong steel and glass and is a famous symbol of Chicago, representing the city's amazing architecture and spirit! ๐