Designs for what will be Britain's biggest piece of public art, a 120 metres tall looping tower by the artist Anish Kapoor that people will be able to climb, giving spectacular views of London. The structure will officially be called the ArcelorMittal Orbit, after steel magnate Lakshmi Mittal, the richest man in Europe, who is funding it.
The structure will cost about £19.1m.
Kapoor said one of his references was the Tower of Babel. "There is a kind of medieval sense to it of reaching up to the sky, building the impossible. A procession, if you like. It's a long winding spiral: a folly that aspires to go even above the clouds and has something mythic about it."