Espacio Uno, Museo Nacional Centro de Arte Reina Sofía; Madrid, Spain (traveled to Salamanca in 1999) (1998)
He was the first President of the Royal Patronage of the Museo Nacional Centro de Arte Reina Sofía.
Other works are held by the Pompidou Centre (Paris), Museo Nacional de Bellas Artes (Santiago de Chile, Chile), Museo Nacional de Bellas Artes (Buenos Aires, Argentina), Museo Nacional de Bellas Artes (Havana, Cuba), Musée des Augustins (Toulouse, France), and the Museo Nacional Centro de Arte Reina Sofía (Madrid).
International artists are few in the collection, but there are works by Robert Delaunay, Yves Tanguy, Man Ray, Jacques Lipchitz, Lucio Fontana, Yves Klein, Max Ernst, Richard Serra, Bruce Nauman, Donald Judd, Damien Hirst, Julian Schnabel, Joseph Beuys, Nam June Paik, Wolf Vostell, Gabriel Orozco, Clyfford Still, cubist still lifes by Georges Braque and a large work by Francis Bacon.
Sofia | Club Nacional de Football | Atlético Nacional | Sofia University | Arte | Museo del Prado | PFC CSKA Sofia | El Nacional | Sofia Coppola | Commedia dell'arte | Sofia Gubaidulina | Museu Nacional d'Art de Catalunya | Distrito Nacional | PFC Levski Sofia | Museo de Arte Moderno | Liga Nacional de Fútbol de Guatemala | Jornal Nacional | Centro Escolar University | Museo Nacional Centro de Arte Reina Sofía | Estádio Nacional | Dirección de Inteligencia Nacional | Arte Johnson | ARTE | Talavera de la Reina | Sofia Province | Queen Sofía of Spain | PFC Slavia Sofia | El Museo del Barrio | Club Deportivo El Nacional | Sofía Vergara |
Ullán wrote poems on various on several artists, which are displaied at Museum of Modern Art, Museo Nacional Centro de Arte Reina Sofía and Bibliothèque nationale de France.
Leandro Katz has exhibited as an artist, and screened his films, at institutions including the Museum of Modern Art, Whitney Museum of American Art, the New Museum of Contemporary Art, El Museo del Barrio, the Brooklyn Museum, MoMA PS1, the Chicago Art Institute, the Museum of Contemporary Art, Los Angeles, the Buenos Aires Museum of Modern Art, the Bienal de La Habana, Cuba, and the Museo Nacional Centro de Arte Reina Sofía, among others.