The most important museums in the world have loaned artwork for this very special occasion. The Museo Nacional Centro de Arte Reina Sofía has welcomed works never before seen in Spain from the Museum of Modern Art, MoMA, the Whitney Museum of American Art and the Metropolitan Museum of Art of New York; the Centre Georges Pompidou in Paris, the Tate Modern in London and the Galería Nazionale D’Arte Moderna of Rome. Important galleries also loaned pieces, such as the Denise René Gallery, which in 1955 organised the first exhibition dedicated to kinetic artists.