This publication examines the Russian architectural avant-garde of the 1920s, a period of extraordinary experimentation shaped by the Russian Revolution, the Civil War and the search for new forms of collective life. It explores the diversity of Soviet modernism, from Constructivism and Rationalism to innovative approaches to housing, communal buildings and architectural theory. Essays discuss the movement's pre-revolutionary origins, its competing artistic and ideological positions, and the work of influential architects and artists, including Vladimir Tatlin, Moisei Ginzburg, the Vesnin brothers and Ilya Golosov. More than 300 contemporary photographs and historical documents illustrate projects, concepts and unrealised proposals that helped shape the development of modern architecture internationally. (AI-generated content description)