Pirates of the Caribbean is a multi-billion dollar Walt Disney franchise encompassing a theme-park ride, a series of films and spinoff novels, as well as numerous video games and other publications. Pirates of the Caribbean attractions can be found at numerous Disney theme parks. Pirates of the Caribbean (the ride) was envisioned in the late 1950s as a walk-through wax museum at Disneyland that would have featured depictions of real pirates in static scenes. Instead, Disney Imagineers utilized the technological breakthroughs achieved in the company's 4 pavilions at the 1964-65 World's Fair to transform the attraction into a boat ride through vivid environments filled with fictional audio-animatronic pirates sacking a Caribbean seaport. Its theme song, Yo Ho (A Pirate's Life for Me), sets a lighthearted tone for what were seen as violent criminals in reality.