Piazza Castello 27. Downtown Milan. Here, in 1962, Achille Castiglioni—a leading figure in the golden age of Italian design—set up his studio, together with his brother Pier Giacomo. He worked in it, incessantly, until his death in 2002. This space, now transformed into a studio-museum open to the public and the headquarters of the Fondazione Achille Castiglioni, offers a unique opportunity to enter his imagination. It is a place of work and of life, brimming with the stories, experiences, ideas, exchanges, and relationships that piled up there over a span of forty years. Published for “Le regole del gioco” (“The Rules of the Game”)—presented at the Fondazione Achille Castiglioni in Milan and realized in collaboration with La Triennale di Milano—this book accompanies a project that aspires to evoke the figure of Achille Castiglioni through the works of a varied group of artists (Alek O., Stefano Arienti, Richard Artschwager, Céline Condorelli, Thea Djordjadze, Jason Dodge, Martino Gamper, Max Lamb, Christoph Meier, Olaf Nicolai, Amalia Pica, Lisa Ponti, Charlotte Posenenske, Riccardo Previdi, Emilio Prini, Carol Rama, Mandla Reuter, and Patrick Tuttofuoco) who were invited to forge a dialogue with the artifacts, models, objects and the architecture of the Studio Museo, as well as with the modus operandi of the Milanese architect. “Achille Castiglioni is an ode to the imagination, a stimulus to look at everything that surrounds us in life as a possible impulse for creation”, writes exhibition curator Luca Lo Pinto. “Achille Castiglioni once said that ‘a good project does not arise from the ambition of making one’s mark, the mark of the designer, but from the desire to establish even a small exchange with the unknown personality that will use the object we have designed’. A perfect summary of the premises behind the concept of the show”.