The Reina Sofía Museum, in full Reina Sofía National Art Museum (Museo Nacional Centro de Arte Reina Sofía, abbreviated as MNCARS), is the Spain's national museum of 20th-century art. The museum is mainly dedicated to Spanish art. Highlights of the museum include excellent collections of Spain's greatest 20th-century masters, Pablo Picasso, Salvador Dalí, Joan Miró, Juan Gris and Julio González. Certainly the most famous masterpiece in the museum is Picasso's painting Guernica. The Reina Sofía also hosts a free-access library specializing in art, with a collection of over 100,000 books, over 3,500 sound recordings and almost 1,000 videos.