The AON Center got just one year as the tallest building in Chicago before it was surpassed by the Sears Tower, which is now known as Willis Tower. Originally known as the Standard Oil Building ...
The effort was, in part, to diversify Dubai’s economy away from being largely oil-based ... there,” Smith says Is Burj Khalifa the tallest building in the world? At 2,722 feet from base ...
The 127-story Shanghai Tower is now the tallest building in China and the second tallest in the world. From breaking ground to completion, the building took almost seven years to complete.