ArcelorMittal Orbit

The ArcelorMittal Orbit is a 114.5 metre (376 feet) tall sculpture and observation tower in the Queen Elizabeth Olympic Park in Stratford, London. It is Britain's largest piece of public art,[3] and is intended to be a permanent lasting legacy of London's hosting of the 2012 Summer Olympic and Paralympic Games, assisting in the post-Olympics regeneration of the Stratford area.

More information on the Wikipedia page.