According to modern legend, Walt Disney was bothered by the sight of a cowboy walking through Disneyland's Tomorrowland enroute to his post in Frontierland. He felt that such a sight was jarring, and detracted from the guest experience. When the Florida park was being planned, engineers designed utilidors to keep park operations out of guests' sight.
The utilidors are beneath the Magic Kingdom, but they are not a basement. Because Florida has such an elevated water table, most of these tunnels were actually built at ground level. That means the Magic Kingdom was built above that. All the guests of the park are one storey high. Parts of Fantasyland, including Cinderella's Castle, are at third-story-level (this is why the castle seems to loom so large as guests approach it via Main Street, USA). The ground's incline is so gradual that guests do not realize they are ascending to the second and third stories. The Magic Kingdom is built upon soil which was removed from what is now the Seven Seas Lagoon.
The utilidors are built on 9 acres (36,000 m2), and the floor plan is a circle with a path down the middle. The tunnel walls are color-coded to make it simple for users to determine their location. The utilidors can be accessed from a main tunnel entrance located behind Fantasyland, or through unmarked doors throughout the Magic Kingdom. Magic Kingdom cast members park about one mile (1.6 km) away and are transported via a Disney bus to the tunnel. Some shops, restaurants and attractions have direct access to the utilidors.