The 1939 World's Fair opened on April 30, 1939 in Queens, NY. The whole vision of the future that it puts forth I find kind of strange, kind of like Brasilia, with the giant sphere. The "Court of States" may have had some influence on the United Nations being based in NY. (Indeed, the UN was first located there before moving to its permanent headquarters.) Television was introduced there. The interstate highway system was showcased. And superman. And last, but not least, Tomorrowland at Disneyland.