Disney World has become such a part of our popular culture it seems as if it’s been open forever, but the Magic Kingdom – the first of Disney’s Florida theme parks – opened to the public on October 1, 1971. After the success of Disney Land California, Walt Disney and his brother Roy began buying 27,000 acres of land near Orlando, Florida in. The size of the park would enable Walt’s dream: to create a fantasy world within the park where families could leave the outside world behind.