This book is constructed around the work of Manuel Castells on the space of places, the space of flows and the networked city. Following an introduction by Castells in which he sets out the theoretical and empirical framework to be followed, the book will feature nine original contributions focusing on the transformation of the fabric of the networked city in terms of policies and social practices. The articles will touch on a range of areas, such as architecture, local public action including its sociohistorical transformation, and mobility practices which create tensions between places and flows.