Architect and propagandist of the modern movement, Alberto Satoris (1901 1998) assembled a remarkable photography collection of modern architecture, published in part in two anthologies that have since achieved mythical stature: Gli Elementi dell'architettura funzionale and l'Encyclopédie de l'architecture nouvelle. These photographs document the architectural works from around the world, including Le Corbusier, Walter Gropius, Oscar Niemeyer and Luis Baragon, photographed by the best specialists of their period, such as Arthur Köster, Julius Shulman and Armando Salas Portugal. This work presents and analyses the collection, one of the key elements of the voluminous archives that Alberto Sartoris donated to the Swiss federal government. It also illustrates his activity as a collector and editor and throws light on a poorly understood aspect of twentieth century architecture, namely, the mechanisms behind the creation and diffusion of the image of modern architecture, as well as the determining role played by photography in this process. Published in collaboration with the Vitra Design Museum, this book, featuring illustrations of emblematic pieces from the museums collections, expands our thinking about design.