The host China pavilion will remain. Normally, foreign pavilions have to be dismantled after the Expo. However, there is a special motion in front of the Expo organizing committee to make an exception for the Shanghai Expo.
French prime minister Sarkozy has made it clear that France intends to gift the French pavilion to China. In other words, the French pavilion will "remain after the expo is over."
"
Expo pavilion will be French gift to China
* Source: Global Times
* [21:26 January 06 2010]
...
Sarkozy also wished that the pavilion could be retained after the Shanghai World Expo as a gift to the Chinese people.
Therefore, unlike some other temporary pavilions, the
French pavilion has been built and decorated to be a permanent building from the beginning."
"According to the rules of the Bureau of International Expositions (BIE), the governing body of the World Expos, and plans from Shanghai Expo organizers, all foreign pavilions are to be dismantled after the event and the Expo site redeveloped.
At the Aichi Expo in Japan five years ago, all the Expo structures were removed and the site was rebuilt as a youth training camp.
After Expo Shanghai, only a few structures will remain on the site. These include the China pavilion, the Theme pavilion, the Cultural Center, Expo Center and Expo Boulevard. These will become permanent landmarks on the site after Expo finishes at the end of October.
But some foreign countries want to retain their pavilions in Shanghai or elsewhere in China as a testament to their friendship with China."