No mention of Expo 2010, which had representation from 65 different countries: https://en.wikipedia.org/wiki/Expo_2010_pavilions. I didn't go, but the photos of the architecture from the different countries were beautiful.
> After the six-month run, the Expo had attracted well over 70 million visitors. The Expo 2010 is also the most expensive fair in the history of World's Fair, with more than 45 billion US dollars invested from the Chinese Government
> After the six-month run, the Expo had attracted well over 70 million visitors. The Expo 2010 is also the most expensive fair in the history of World's Fair, with more than 45 billion US dollars invested from the Chinese Government