When Disneyland Park opened to the public in 1955, it was overcrowded. Sleeping Beauty Castle in Disneyland 15,000 people were expected on opening day, which was initially supposed to be an invite-only preview event.

When Disneyland Park opened to the public in 1955, it was overcrowded. Sleeping Beauty Castle in Disneyland 15,000 people were expected on opening day, which was initially supposed to be an invite-only preview event.