Disneyland Castle

Since its opening, Disneyland has undergone a number of expansions and renovations, including the addition of New Orleans Square in 1966, Bear Country (now Critter Country) in 1972, and Mickey's Toontown in 1993. Disney California Adventure Park was built on the site of Disneyland's original parking lot and opened in 2001.
Disneyland has a larger cumulative attendance than any other theme park in the world, with close to 600 million guests since it opened. In 2011, the park hosted approximately 16.14 million guests, making it the second most visited park in the world that calendar year.