This short documentary is part of a series hosted by American historian, sociologist, philosopher of technology, and literary critic Lewis Mumford, who was particularly noted for his study of cities and urban architecture. This episode explores the tension and mutual dependence of urban and rural areas. History shows that cities thrive best when they live in harmony and balance with the countryside. How can this balance be maintained or restored in sprawling metropolitan regions? The film is a revealing portrait of the discourses of urbanization that were circulating in the middle of the 20th century, including the development of what we know today as the suburbs.