Knox' in-situ studies present 50 especially significant city districts from the whole of Europe in words and pictures. His field research focuses on typologically outstanding city districts that have developed a high degree of individuality. Cities are the symbiosis of diverse districts: the smaller units serve to provide an important identity function: business centers and amusement districts such as the City and the West End in London, technology and science quarters (Adlershof in Berlin), designer districts such as the Zona Tortona in Milan and the Fashion District in New York. Two other factors that play a major role are the conversion of industrial wastelands and new districts colored by a supranational capitalism or a sustainable or dubious planning - such as the Vauban residential quarter in Freiburg in South Germany or the Lower Ninth District in New Orleans. Paul Knox also always analyzes how and why these districts have turned out the way they are: outlining their visible and also their hidden and often blurred biography . A fascinating journey through space and time!