When you first enter Disneyland, in California, or the Magic Kingdom, in Florida, a charming train station sets elevated before you, like a curtain concealing a stage-show floor. Walk through a tunnel under a station to find vibrant posters displayed like coming attractions banners at a theater. Then set foot on Main Street, U.S.A., an idealized Victorian-era town filled with bright colors, upbeat melodies, and mouthwatering smells. Here, your eyes finally meet the grand view at the end of the street: a stunning castle, filled with the promise of adventures beyond. Keen observers will notice...