Which artist designed the dream sequence in Hitchcock's 1945 film Spellbound?

Salvador Dalí designed the dream sequence in Alfred Hitchcock’s 1945 film Spellbound.

Dalí was commissioned to create an unusually vivid visual representation of a troubled mind. The film follows psychoanalyst Constance Petersen, played by Ingrid Bergman, as she tries to help an amnesiac man, played by Gregory Peck, recover suppressed memories and uncover the truth behind a suspected murder. Its subject matter made dream imagery central to the story.

Dalí designed sets and images filled with surrealist motifs, including enormous eyes, sharply angled spaces, a rooftop and a gambling-house setting. Hitchcock wanted the dream to look bright, precise and unsettling rather than like a conventional hazy movie dream. Producer David O. Selznick and production constraints substantially reduced the planned sequence, so only part of Dalí’s conception appeared in the finished film.

A common mix-up is to say that Dalí directed or animated the sequence. Hitchcock directed Spellbound, while Dalí supplied the visual designs. The film’s score, by Miklós Rózsa, also became famous and won an Academy Award, but it was not part of Dalí’s contribution.