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.
Al-Waleed bin Talal
In August 2011 al-Waleed announced that his company had contracted with the Saudi Binladin Group to build the world's tallest building, the Kingdom Tower (at a height of at least ) for SR 4.6 billion. The original plan—announced in 2008—called it برج الميل (Arabic for "One-Mile Tower"), at a height of and an estimated cost of $20 billion.