When Walt Disney welcomed guests into Disneyland Park for the first time on July 17, 1955, he invited them to venture down Main Street, U.S.A., and into the parks four lands — Tomorrowland, Adventureland, Frontierland, and Fantasyland. Since then, Disneyland Park has added four more lands — New Orleans Square in 1966, Critter Country in 1972, Mickeys ToonTown in 1993, and Star Wars:...