Kingdome City - the tallest building in the world

Arabs want to build a mega tower.It takes 12 minutes to get the elevator down to the top.
Currently, Burj Dubai's Khalifa is the highest building in the world and has 160 floors and 422 meters high.
Over 30 billion dollars will cost to build the Kingdom Tower that will be twice higher than Burj Khalifa and shall be exalted in the city of Jeddah.