This is a self-contained city. Apart from the four main parks (Magic Kingdom, Epcot, Disney-MGM Studios and Animal Kingdom), there are three water parks, a shopping district, 22 hotels, countless eateries, a police force, transport systems, medical centres, even kennels for the pooch. Watch out for the mouse.

In its first year, Disney World saw over 10 million visitors, and it remains one of the world's top tourist destinations, now attracting more than 20 million visitors a year. It's also the world's biggest amusement resort, covering an area twice the size of New York's Manhattan. It would have made Walt very, very happy.