Book excerpt: It is a widely held belief that cities must change, or they will wither and die. One of the key problems of urbanization is how to cope with these changes while retaining the structures constructed and maintained by previous generations. Conservation and the City is a study of conservation and change throughout the built environment - city centres, suburbs and even tiny villages - and how the activites of conservation interact with the planning system. Using detailed case studies from Britain and the Westernized world, the author examines some of the key social, economic and psychological ideas which support conservation, as well as studying the urban landscape and the agents of change. Conservation and the City seeks to understand urban conservation, and in doing so presents possible solutions for managing change in the built environment of the future.