Saudi Arabia has unveiled plans for Kingdom Tower, which is expected to become the world's tallest building with a height of 1,600m, almost a mile.
The master plan for the building was created by US-based architecture firm Adrian Smith + Gordon Gill Architecture, and the project will be built by Dubai-based Emaar.
The 275-storey Kingdom Tower will house hotels, offices, luxury apartments and a shopping centre.
The building, which is expected to cost around £12bn, will have a total floor area of 3.5 million square metres.
Kingdom Tower will be financed by the Saudi royal family-owned Kingdom Holding Company.