Disneyland opened on July 17, 1955.
The park has been visited by more than 515 million guests since it opened to the public, including presidents, royalty, and other heads of state.
In the late 1990s, work began to expand on the one park property. Disneyland Park and its Hotel, the site of the original parking lot, as well as acquired surrounding properties were earmarked to become part of a greater vacation resort development. The new components of this resort were another theme park, Disney's California Adventure Park; a shopping and entertainment precinct, Downtown Disney; and a remodeled Disneyland Hotel, Paradise Pier Hotel and Grand Californian Hotel. Because the old parking lot was built upon, the six-level 10,250 space "Mickey and Friends" parking structure was constructed.