This landmark publication chronicles the unique collaborative venture of the artists Claes Oldenburg and Coosje van Bruggen in a presentation of twenty-six of their large-scale projects---sculptures created in an architectural scale for urban landscapes from 1976 to 1994. Seen together for the first time are the recent Shuttlecocks for Kansas City, Missouri, and the Inverted Collar and Tie for Frankfurt am Main, Germany (both 1994) among others. Individual case histories, recounted from the personal viewpoints of van Bruggen and Oldenburg, detail the process of development of each of the works, form the time of a sculpture's commission, and the ensuing back-and-forth flow of ideas between the artists, through sketches and preliminary drawings to three-dimensional models and precise engineering plans, which lead to fabrication and installation.