what is the biggest tower
1. Burj Khalifa. Since its completion in 2010, the world's tallest skyscraper has been Burj Khalifa in Dubai, United Arab Emirates. The building, which was designed by the architects Skidmore, Owings & Merrill, is a mighty 828 meters tall and has 163 floors. Burj Khalifa is one of Dubai's most famous buildings.