I visited the Milan Expo (worldexhibition) with a group of architects last friday.
The Expo was very impressing, but also very crowded. There were waiting lines of several hours before most of the pavillions. I saw one line, wrapping around the Japan exhibition, which according the sign should take 5 hours......
This is a drawing of the Italian Pavillion, a beautiful building resembling a starcruiser from Star Wars.
I made this sketch while it was raining outside, it was pretty crowded inside.