April 21 marks the 53rd anniversary of the Century 21 Exposition, a World’s Fair held in Seattle, Washington.

Here are a few facts you may not know about World’s Fairs:

First: The first world’s fair recognized by the Bureau of International Expositions was the Great Exposition in London in 1851, a personal project of Prince Albert the husband of Queen Victoria.

Second: The 1964 New York World’s Fair was not officially sanctioned by the BIE, with the international group actively asking nations not to participate. Because of this, many of the attractions were sponsored by corporations instead of countries.

Third: The most recent world’s fair was held in Yeosu, South Korea in 2012; the next is set to open May First in Milan, Italy.

Our question: In the United States, which two states have held three World’s Fairs?

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