For the past six months, Anish Kapoor has been grappling with the challenge of putting on this year's solo summer show at the Palace of Versailles. The sculptor and installation artist is walking in the footsteps of some sacred monsters of contemporary art, starting with Jeff Koons in 2008, and including Takashi Murakami in 2010 and Joana Vasconcelos in 2012. In recent interviews here, Kapoor, 61, cheerfully acknowledged making a mess of the royal domain. Or two messes: one in the Versailles Palace garden; the other in the Salle du Jeu de Paume museum, the former indoor Royal Tennis ...