There is a big Expo going on right now in Shanghai. Each countries have a self-built Pavilion to present their technology, food, culture and more. For the most famous Pavilion you need to wait 3 hours. China, Germany, Switzerland are some of the most visited. Expo 2010 is a great event for countries around the world. More info on www.expo2010.cn
For every Pavilion you visit, you get a stamp in your "passport"
Expo official magazine Chinese Edition