History of the world's tallest buildings
The tallest building in the world, as of 2022, is Burj Khalifa. The title of "world's tallest building" has been borne by various buildings, such as the Rouen Cathedral and the Empire State Building.
Taipei 101
Upon its completion, Taipei 101 was the world's tallest inhabited building, at as measured to its height architectural top (spire), exceeding the Petronas Towers, which were previously the tallest inhabited skyscraper at . The height to the top of the roof, at , and highest occupied floor, at , surpassed the previous records of and , respectively; the Willis Tower had previously held that distinction. It also surpassed the 85-story, Tuntex Sky Tower in Kaohsiung as the tallest building in Taiwan and the 51-story, Shin Kong Life Tower as the tallest building in Taipei. Taipei 101 claimed the official records for the world's tallest sundial and the world's largest New Year's Eve countdown clock.