According to a recent report by the usually well-informed Dubai outlet MEED, the skyscraper will be part of a larger ongoing business district near Riyadh named the North Pole and is being designed by prestigious British studio Foster + Partners.

To put its height into perspective, the new tower will be around 3.5 times the height of the USA's tallest building, the One World Trade Center, and will even be over twice the height of Dubai's Burj Khalifa, which is the world's current tallest building. It will also be far taller than anything else planned, including the JEC Tower, which is also in Saudi Arabia.

The challenges to overcome are immense. For example, wind loads at such heights would crush a normal building, while even the ground itself may not be able to support it. Plus there are earthquakes to consider, too. It's enough to give any structural engineer sleepless nights.