Daniel Buren born 25 March 1938 in Boulogne-Billancourt, Hauts-de-Seine is a French conceptual artist.In 1986 he created a 3,000 m² sculpture in the great courtyard of the Palais Royal, in Paris: “Les Deux Plateaux”, more commonly referred to as the “Colonnes de Buren” “Buren’s Columns”. This provoked an intense debate over the integration of contemporary art and historic buildings.