From the collections of Edward James, Roland Penrose, Gabrielle Keiller, Ulla and Heiner Pietzsch. The dream worlds of the subconscious: four legendary Surrealist collections of the twentieth century demonstrate the long-term seductive power of Surrealism. With over 150 top works in all artistic media, Surrealism, the defining art movement of the twentieth century, can be experienced here in a breadth which has hitherto never been shown before.