Disneyland Resort | 190,465 followers on LinkedIn. Walt Disney opened Disneyland Park on July 17, 1955, with hopes that it would become “a source of joy and inspiration to all the world.” Since then, the Disneyland Resort in Anaheim, Calif., has welcomed guests from around the world, expanding to become an approximately 500-acre, multifaceted, world-class family resort destination, complete with two renowned Disney theme parks, three hotels and the Downtown Disney District known for its exciting shopping, dining and entertainment. Disneyland introduced the world to an entirely new concept in family entertainment.