Fifty years ago a landmark conference at Harvard University established urban design as a distinct architectural and planning practice. Today, with the world and anticipate the challenges posed by the unprecedented rate of urbanization, particularly in the developing world, and how the profession will need to adapt in order to confront them. The volume opens with excerpts from transcripts of the 1956 Harvard conference followed by essays that contextualize and critique its assumptions and ambitions. Subsequent essays address such topics as the social conscience of urban design and stake out the competing sensibilities in the field, from New Urbanism to avant-garde.