English: Aerial view of Disneyland looking southeast in 1963, located in Anaheim , California , United States . The Santa Ana Freeway (I-5) is in the upper left corner. Harbor Boulevard forms the eastern boundary of the park . To the middle right, one can see the Haunted Mansion under construction. While the main building is complete on the outside (the white building), the show building is just beginning construction on the right side of the railroad tracks (most of the ride takes place in a show building outside the confines of the railroad). The Haunted Mansion would open in 1969. Also under construction, and up and left from the Haunted Mansion, is Pirates of the Caribbean , which opened in 1967. The two attractions took a while to build because Disney's engineering arm at the time, WED Enterprises (now known as Walt Disney Imagineering), was busy on projects dealing with the 1964 New York World's Fair . Both attractions are located in New Orleans Square , which opened in 1966. Anaheim's newly completed Melodyland Theater ("theater-in-the-round"), is at the top of the photo.