Disneyland is celebrating 70 years of being "The Happiest Place on Earth." The summerlong festivities in southern California include the opening of "Walt Disney – A Magical Life," a show featuring a lifelike animatronic of the company's founder that debuts Thursday and also marks Disneyland's official anniversary.

A decade-by-decade retrospective that highlights the SoCal landmark's greatest creations, fascinating pivots and noteworthy blunders.