The great metropolitan centres of the world - the World Cities - count their populations in millions, even in tens of millions, and they are growing at an alarming rate. Can this growth be controlled? And what is to be done to solve the problems, both human and administrative, that it is everywhere producing - the congestion of people and buildings, the chronic shortage of living space, the endless traffic jams, the increasing difficulties of travel to work? This book is the study of seven metropolitan London, Moscow, New York, Paris, Tokyo, and the great city complexes of Holland and the Rhine-Ruhr. It analyzes the factors which have contributed to rapid growth in each case, and examines the plans which the various administrative machines in different countries are evolving to meet the demands of the modern city.