Rubber Duckie

Title: Rubber duck
Year: 2007
Location: river the Loire, France
Dimensions: 26 x 20 x 32 meters
Materials: inflatable, rubber coated PVC, pontoon and generator
Production: le Lieu Unique and the Biennial Estuaire

This guy (Florentijn Hofman) has some pretty cool Conceptual art projects as well (like the piano). More picts at on his site here.