This collection attempts to answer the two leading questions of how urban space structures the life of ethnic groups and how ethnic diversity helps to shape urban space. A multi-disciplinary team of authors search the various dimensions of the spatial organization of inter-ethnic relations in cities around the globe. The presentation of material from diverse locations such as Toronto, Philadelphia, Beirut, Jakarta, Tehran, Osaka and Albuquerque presents a unique opportunity for comparative analysis of ethnicity and spatial patterns.