Walt Disney, on the 1967 redesign of Tomorrowland, via Paleofuture:
Now, when we opened Disneyland, outer space was Buck Rogers. I did put in a trip to the moon, and I got Wernher von Braun to help me plan the thing. And, of course, we were going up to the moon long before Sputnik. And since then has come Sputnik and then has come our great program in outer space. So I had to tear down my Tomorrowland that I built eleven years ago and rebuild it to keep pace.
The new attractions included the Carousel of Progress, Adventure Thru Inner Space, Flight to the Moon (the name changed to Mission to Mars in the ’70s), and the PeopleMover—all of them gone today.