'This is a textbook about cities or, more precisely, about the physical form of cities. It provides an overview of the main elements of urban form—streets, street blocks, plots and buildings—structuring our cities and the fundamental agents and processes of transformation shaping these elements. It applies this analytical framework to describe the evolution of cities over history as well as to explain the functioning of contemporary cities. After the initial focus on the 'object' (cities), the book introduces how different schools of thought have been dealing with this object since the...