Check this out for an overview of the site of the pavilions.
http://www.expo2000.de/deutsch/webcam/panorama_contents_extra.html

Where's the Irish one?

Behind that bleedin pillar yoke

I visited the Expo grounds in late June and was struck by how many of the pavilions and venus used industrial fabric, either for structure (roof) or shading. Is there a trend in world architecture to using fabric?