Answer the following question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Museo de Escultura al Aire Libre de Alcala de Henares - The Museum of Outdoor Sculpture of Alcala de Henares (Museo de Escultura al Aire Libre de Alcala de Henares) is a permanent exhibition of contemporary art in public Alcala de Henares (Madrid - Spain) opened in 1993 and organized by the sculptor Jose Noja.
Answer:
Building