This collection of twenty-one essays, written by colleagues and former students of the architectural historian Spiro Kostof (1936-1991), presents case studies on Kostof's model of urban forms and fabrics. The essays are remarkably diverse: the range includes pre-Columbian Inca settlements, fourteenth-century Cairo, nineteenth-century New Orleans, and twentieth-century Tokyo ... The theme of the volume is that the street presents itself as the basic structuring device of a city's form and also as the locus of its civilization. Each essay is a detailed investigation of a single urban street with unique historical conditions. The authors' shared concern regarding anthropological, political, and technical aspects of street making coalesce into a critical discourse on urban space.