 It was officially classified as the world's tallest from 2004 to 2010.Now, it is still the tallest building in Taiwan, Asia's 6th tallest building, and the world's 9th tallest building.There are currently six buildings over 200m under construction in Taiwan, including the Taipei Twin Tower 1, which is under planning and will reach , and the Taipei Sky Tower, which is under construction in Taipei and will reach .