Designed by the famous Catalan architect Antoni Gaudí, Casa Batllo is one of the most famous museums in the world and a landmark tourist attraction in Barcelona.

Ancient and Modern commissioned the museum’s new staircase for this Unesco World Heritage Site. 13 tons of Spanish quarried, robotcut, hand-sculpted and polished Nero Marquina marble appears suspended in mid-air, spiralling down from the ground floor to the basement. It is a fitting emblem for the bigger ambitions of the museum – a first, in that it is the largest free-floating marble staircase in the world.