This catalogue of the exhibition curated by Germano Celant in the Correr Museum of Venice investigates a specific aspect of the work of Claes Oldenburg, a major figure of contemporary American art: that of his creations relating to architecture, documenting the large scale projects executed by the artist between 1969 right up to 1999. Here is an opportunity to discover and appreciate the monumental constructions the artist executed all over the world, from Chicago and Philadelphia, Paris and Dusseldorf, Frankfurt to Weil am Rhein, including the latest, original project the artist intends to execute with Coosje van Bruggen for Venice, a lion's tail that, issuing from the Napolconic Wing, will partially take over the space in front of San Marco. The book, aside from the exhibited works, features the forty-eight projects executed on every continent, an offers valuable scientific knowledge of workings of the great American artist, and reflects on the controversial issue of art in public spaces, and the essential collaboration between the artist and the public.