Once again, the 1964-65 New York Worlds Fair:

The Space Age Never Looked Brighter Than It Did in the Mid-1960s

It’s amazing how fast cultures can change, even without having bombs rain from the sky. In 1964, before Viet Nam really kicked in, when the sixties were (apparently) still an extension of the fifties, the future was bright, glorious and corporate sponsored. By the early 1970’s… everything was dystopia, the future overrun with damn dirty apes and radioactive mutants and fascist dictatorships.