The changing spatial organization of the city of Amsterdam reflects a larger-scale process: the familiar shape of Western cities is changing across the globe. For centuries, the urban core was taken for granted as the focal point for international contacts and day-to-day activities. The essays collected here consider how urban spaces have been transformed—not only spatially but socially, economically, and culturally—into multi-centered metropolitan arrays, with contributors examining the new urban identities that may emerge from such changing conditions.