Have you ever attended a World's Fair? This article discusses what happened to them and the desire to return it to the US.
I went to the one in 1982 in Knoxville - Brandon did you go? It was awesome! I was just a a kid at the time but it was truly a tremendous experience to 'visit' so many different cultures and it had an element of fun.
I myself often wondered what had happened to them.
Do you think there would be interest in attending given the instant nature of the internet these days?
I am big believer in education + fun.