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.
China World Trade Center Tower III
In 2010 the China World Trade Center Tower III took the title of "world's tallest building with a roof-top helipad" from the US Bank Tower. Its helipad is 330 m (1,083 feet) high compared to the US Bank Tower's helipad at 310.3 m (1,018 feet). As of Dec, 2018, China World Trade Center Tower III is the second tallest building with a roof-top helipad, with the tallest being the Guangzhou International Finance Center tower which is located in Guangzhou with a height of 439 m (1,439 feet) high.