London 2012: Anish Kapoor Orbit tower takes shape

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Building work on Anish Kapoor's spiralling tower is continuing in London's Olympic Park.

Sections of the ArcelorMittal Orbit are being lifted into place by a crane with nearly a third of the £22m structure under completion.

Nicknamed the Helter-Skelter and the Hubble Bubble, the tower is a continuous loop of steel coiling upwards to a planned height of 115m (377ft), making it the largest piece of public art in Britain.