At first a successful painter of the Roman Baroque, Pietro (Berrettini) da Cortona (1597-1669) soon emerged as an architect of equal stature. This book is the first to focus full attention on Cortona's buildings and projects and to assess his position in Roman Baroque architecture. The book discusses Cortona's major commissions, particularly SS. Luca e Martina, the Villa del Pigneto, S. Maria della Pace, and S. Maria in Via Lata, as well as the designs that remained unbuilt, such as his plans for the Palazzo Pitti in Florence and the Louvre in Paris. Cortona's great decorative cycles, including Palazzo Barberini, the Chiesa Nuova, and others are also considered as part of his stunning vocabulary of architectural decoration. The book explores Cortona's relationships and rivalries with other outstanding Roman architects to illuminate the competitive climate in which he worked, and it concludes with a review of his influence and reputation into the twentieth century.