Plans for 1km high building in Dubai

Developer Nakheel has launched a multi-billion dollar plan to build the world's tallest tower, despite the deepening global financial crisis.

The tower, at the centre of the Nakheel port and harbour complex, is expected to be more than a kilometre high.

Currently the world's tallest building, the Burj Dubai stands at 818m.

Nakheel's project will have more than 200 floors and 150 lifts. It will provide homes and offices for 100,000 people.

Meanwhile it was predicted that 30,000 workers would be involved in its construction. It is also thought that if all the proposed buildings reinforcing bars were laid end to end they would stretch from Dubai to New York.

Nakeel's Australian chief executive Chris O'Donnell commented: "At more than a kilometre high this is an unbelievably ground-breaking design."