Roald Dahl's famous story of Willy Wonka and his fabulous factory has transcended the world of children's fiction and been absorbed into global culture, with various stage adaptations, blockbuster movies, real-life Wonka bars and countless other spin-offs. This highly illustrated celebration tells the story of how the book was conceived and written, assesses its impact and examines how it has been interpreted by illustrators, film-makers, actors and designers.