Time lapse video of Tokyo Sky Tree by Darwinfish105 [Jp]. The construction of the tower – the world’s tallest (634m) – was completed on February 29.
The definition of “tower” differs from “building”, with the later mainly habitable. For many years the world’s tallest tower is taller than the tallest building, but it changed in 2010 with the completion of Burj Khalifa (830m) in the United Arab of Emirates.