Switzerland. Vaud canton. Yverdon. Arteplage, Expo 02. "The Cloud ". On the shores of the lake, a huge timber construction made of a steel structure, 120 metres high, covered by a network of 31 ' 400 buzzards with high pressure, producing an artificial water cloud. Suspended over the lakeside at the end of a long, metal walkway, the blur is created by spraying water through more than 30,000 jets evenly spread over a 78-tonne structure. A duck on the lake Neuchâtel. The distinctly atmospheric construction - created by New York architects Elizabeth Diller and Ricardo Scofidio. National exhibition. © 2002 Didier Ruef .