For what World's Fair was the Space Needle in Seattle erected?

The 600-foot futuristic steel structure in Seattle, known as the Space Needle, was erected for the Century 21 exposition in 1962.

What musical work plays during the space ballet in 2001: A Space Odyssey (1968)? Blue Danube Waltz by Johann Strauss was the piece that…
At the 1939 New York World's Fair, how large were the TryIon and the Perisphere? The symbols of the theme of the 1939 New York…
Where was Needle Park in New York City? Needle Park, the infamous hangout in New York for addicts…
Who is the city of Seattle named for? The city of Seattle is named for a local Indian…
Does the Vanity Fair really exist? The fair exists in literature, created by John Bunyin in…
To what fair does the song "Meet Me in St. Louis" refer? The song "Meet Me in St. Louis" by Andrew B.…

For what World’s Fair was the Space Needle in Seattle erected?