Jeff Koons at Versailles

'Hanging Heart' (left) at the top of the 'queen's staircase' at Versailles. The sculpture became the most expensive piece of art by a living artist ever sold when it was auctioned for $23.6m at Sotheby's last year. Koons has hung another work - 'Moon', a 9ft wide blue moon made of inox - in the Hall of Mirrors, where the Treaty of Versailles to end World War One was signed