An architect has revealed his spectacular plans for the world's first underwater skyscrapers, which will be capable of holding 20,000 people.

Vincent Callebaut from Belgium says has he designed the self-sufficient oceanscrapers as a viable place for humans to live to reduce the carbon footprint on the planet.

The eco-friendly structures don't require dangerous fossil fuels as they produce their own energy and heat.

Architect Vincent Callebaut, who has designed the world's first underwater skyscraper and village, which can hold 20,000 people.