With the loss of their great visonary, the Imagineers debated over the design concepts of the haunted mansion, such as whether the haunted mansion experience should be scary, or funny. In the end, imaginers Marc Davis (funny), and Claude Coats (scary), combined their ideas, so the ride begins with spooky sets and chilling concepts, and eventually becomes "a swinging wake", full of silly spooks, and ghostly gags.
Finally, after years of planning the New Orleans Square Haunted Mansion opened its doors, on August 9, 1969.
During this time the Walt Disney World Magic Kingdom was being planned and constructed in Florida. So duplicates of each mansion prop and scene were constructed, with one staying in California, and the other going to Florida, to be stored until the WDW haunted mansion was completed.