Well, that was the original idea anyway - recent changes to park policy now allow cast members to walk freely through the park in whatever outfit they happen to be wearing.

A vast network of underground tunnels (Utilidors) connect all sections of the Magic Kingdom, thus preventing guests from seeing any of the necessary behind-the-scenes operations, and preventing cast members from one land from having to walk through another. Each land is themed to its appropriate title and maintaining that theme is paramount to the park's operation. The six lands consist of Main Street, U.S.A., Tomorrowland, Fantasyland, Frontierland, Liberty Square, and Adventureland.

The Magic Kingdom is divided into six distinct areas (lands), arranged in a spoke-like formation, all meeting at the top of Main Street, U.S.A.

To first time visitors, they find themselves quickly, and almost helplessly, transported back to their childhood. For veteran visitors to Walt Disney World, visiting the Magic Kingdom is like visiting an old friend. No trip to Disney World is complete without visiting the Magic Kingdom. It has stayed true to its original vision, a place where families could gather in a clean and safe environment to enjoy the time they spend together. How the Magic Kingdom has managed to maintain its charm and appeal over the years is a lesson in simplicity. Yet, somehow, the Magic Kingdom continues to remain the undisputed king of theme parks, drawing more yearly visitors than any other. Opened in 1971, the venerable theme park has withstood decades of changing cultures, a constantly shifting social climate, and an explosion of technology that has left lesser places outdated and obsolete. It has often been said that the true essence of Disney magic can be experienced simply by stepping foot inside the Magic Kingdom. Your One-Day Guide to The Best of Magic Kingdom

Disney's magic kingdom