Revealed: Plans to build the world's tallest building at 1km high

Plans to construct what could become the world's tallest building, at more than 1km high, were unveiled today.
Dubai developer Nakheel - the company that created man-made islands in the shapes of a palm tree and the world - said the structure will be the centre-piece of an inner-city harbour set to become the emirate's new, unofficial capital.
It would not comment on exactly how high or how expensive the Islamic design-inspired Nakheel Tower will be. The building will have "more than 200 floors" and be part of "a multi-billion pound development", the company said

Full article on The Daily Mail

Nakheel's website (with a great CG video)