However, Disney's involvement in Disney World ended in late 1966, when he was diagnosed with lung cancer in his left lung, after a life-long habit of chain smoking. He was checked into the St. Joseph's Hospital across the street from the Disney Studio lot and his health eventually deteriorated causing him to suffer a cardiac arrest. He died on December 15, 1966, ten days after his 65th birthday. He was cremated on December 17, 1966 at the Forest Lawn Cemetery in Glendale, California. Roy Disney carried out the Florida project, insisting that the name become Walt Disney World in honor of his brother. Roy O. Disney died three months after the Magic Kingdom opened for business in 1971.
It is an urban legend that Walt Disney's body was cryogenically frozen.
www.wikipedia.com/wiki/Walt_Disney