This catalog presents the first comprehensive study of the Italian architectural drawings in the Cronstedt Collection in the Nationalmuseum, Stockholm, discussing 181 drawings dating from c. 1570 to c. 1620. Among them are works by Francesco da Volterra, Carlo Maderno and other Roman architects, done for churches, chapels, palaces, gardens and fountains―many constituting primary and almost unknown sources for late Mannerist and early Baroque architecture