This study examines the interrelated transformations of cities and urban congregations over the past several decades. How does the new metropolis affect local religious communities? What is the role of local religious communities in creating the new metropolis? Through an in-depth study of fifteen Chicago congregations - Catholic parishes, Protestant churches, Jewish synagogues, Muslim mosques, and a Hindu temple, city and suburban, neighbourhood-based and commuter - this book describes congregational life and measures congregational influences on urban environments.