World has become urban entity living more than half the population in the urban areas in 21st century. But the rapid conversion of fertile agriculture lands into residential buildings, commercial complexes and industrial blocks have been greatly influencing void and space ratio, decreasing sharply food self sufficiency rate of city and affecting badly to the urban ecosystem. Such process of urbanization has been a great challenge for the sustainable development. In this context, this book is motivated to search an appropriate city planning methodology for the 21st century and forwarded the concept of Food Green City. The Concept of Food Green City is a process of restructuring the cities and its ultimate goal is to establish spatial equity and perfection in urban ecosystem for the sustainable development with coexistence of man in natural system. This book thus shows how sustainable development could be achieved with micro action for macro achieve to create urban dominated sustainable world in 21st century. Hence, it will be interesting for policy makers, planners, designers and advocators of sustainable development.