Near one of the many entrances of the Shanghai World Expo - because it was so busy, no one was able to chose their entrance - it was allocated beforehand which bus bay you'd go to and therefore which entrance you'd go through...
Even on a 'quiet' day most of the pavilion lines were crazy full with horror stories such as the Japan pavilion with 6 hour waits, most of the popular ones had quite long waits as well
Inside the US pavilion
The view from one of the bridges
I spy Algeria
This one was one of my favourite exteriors, I think this one was Russia
They had a few big pavilions with all the smaller African and island nations:
Cute African dolls