Surrealism was an artistic movement that began in the early 20th century that emphasized tapping into the subconscious mind to create unexpected juxtapositions of images. It was founded in Paris in 1924 by André Breton, influenced by Sigmund Freud's theories of the subconscious. Major surrealist artists included Salvador Dali, Max Ernst, Joan Miró, and René Magritte. They drew from the subconscious mind using techniques like automatic drawing and frottage to combine images in surprising ways. Surrealism had lasting influence on subsequent artistic movements like Abstract Expressionism and Existentialist philosophy.