There's a list of the famous ones here: https://en.wikipedia.org/wiki/List_of_World%27s_Fair_architecture https://en.wikipedia.org/wiki/List_of_World%27s_Fair_

There's a list of the famous ones here: https://en.wikipedia.org/wiki/List_of_World%27s_Fair_architecture https://en.wikipedia.org/wiki/List_of_World%27s_Fair_archite...