Pier Giacomo Castiglioni was born in 1913.

In 1937, he established the “Architecture,Urban Buildings and Research into Industrial Design” practice with his brother Livio. In 1952 Livio left; another brother, Achille joined the practice in 1944.

He graduated from the Department of Architecture at Milan Polytechnic in 1937 and co-wrote a libel on the Milan Town Planning Scheme: “Fifty Significant Squares in theMilanof the Future” with the architect Carlo Pagani in 1938.

Lecturer and Assistant in Architectural Composition, Professor in Drawing and Relief Work at the Milan Faculty of Architecture. Member of the Board at the Association of Architects and at the Milan City Council Building Commission.

Member of the executive committee for the 13th Triennale in 1964. He exhibited at every Milan Triennale from 1940 on, winning many awards. For the latter, based on the theme “Leisure time, living time”, Pier Giacomo Castiglioni was a member of the Executive Committee.

He was a member of numerous juries: in 1956, 1957 and 1958 for “La Rinascente Compassod’Oro”; La Triennale of Milan; Formica-Domus Competition; Abitare-De Padova Competition; International Cantù Furniture Competition.

He was also particularly active as the curator of exhibition installations for national and international institutes and leading companies attending national and international exhibitions: Montecatini, RAI, ENI, Triennale di Milano, Mostre Esposizioni Torino, “Italia61”, AGIP. Pier Giacomo Castiglioni received numerous prizes and awards, including the “Compasso d’Oro” in 1955, 1960, 1962, 1964, 1967, 1979.