English: Sky scraper comparison, translated to Hebrew This diagram shows height to tip of the tallest element in each building. If measured from the ground to the highest attached component, the Burj Khalifa is the tallest in the world. However, as the antennas are not actually structural, they aren't considered part of the building, thus the Willis Tower building itself is shorter than Taipei 101 and the Petronas Towers. Using the method of ranking heights which counts decorative spires but not antennas, the tallest towers go in order from Taipei 101, Petronas Towers, and then the Willis Tower, followed by the Empire State Building. Willis Tower has the most floors at 108, and has a higher roof than the roof of the Petronas Towers.