The book refers to the exhibition resulting from the project, curated by Rudi Fuchs and Cristina Mundici, for a major urban art intervention on the new boulevard created by the covering of Turin’s Passante Ferroviario (a new tunnel where previously the railway ran on the surface). The project brings together eleven of the best-known and internationally recognised Italian and foreign artists, who have been asked to interpret the theme of public commissions, offering not only the imprint of their own creativity but also a different configuration of the urban intervention: from fountain to door, from monument to practicable sculpture. The exhibition, held at the GAM in Turin from 19 March to 25 April 1998, is documented in this volume with images of the installation and the projects conceived by the artists.