A skysraper twice the height of the world's tallest building, Dubai's Burj Khalifa, has been given the go-ahead in Jeddah, Saudi Arabia.
Architizer reports: "Here are some facts: 'Kingdom Tower' will be one mile high. It will contain almost 12 million cubic feet of space. It will be part of a larger urban development built to house about 80,000 people, at a cost of almost 30 billion dollars. Using your average elevator, it would take 12 minutes to reach the zenith."