Walt Disney died before Walt Disney World was complete.
Disney was a heavy smoker throughout his life , and died of lung cancer in December 1966 before either the park or the EPCOT project were completed.
In 1965 , he began development of another theme park , Disney World , the heart of which was to be a new type of city , the `` Experimental Prototype Community of Tomorrow '' -LRB- EPCOT -RRB-.
