Saudi Arabia has unveiled plans to build a $1 trillion mirror glass skyscraper 120 km long.

The "Mirror Line" will become part of a desert city called Neom. The Saudi prince has said he wants his country to build an iconic and timeless building project similar to the Egyptian pyramids. It is assumed that the building will not have roads and cars - only footpaths. At least in the ground part of the city. There will be another level underground - service infrastructure and transport will be placed there. It is planned to use only renewable energy.