London Mayor London Mayor Boris Johnson has revealed a model of the spiralling sculpture which Turner Prize-winning artist Anish Kapoor has designed to mark the London 2012 Olympic Games.
The 115m tall piece, named the ArcelorMittal Orbit, will be placed in the Olympic Park and will be 22m higher than New York's Statue of Liberty.
The £19.1m design incorporates the five Olympic rings and will offer visitors panoramic views of London.
The BBC's David Sillito spoke to artist Anish Kapoor.
Video animation courtesy Arup