How will changing social conditions affect the built environment in Germany? Under what circumstances do cities and regions transform? "Speculations Transformations" addresses the societal and spatial processes that lie ahead for Germany and speculates on their consequences for building culture: What is it like to live in a city where payments are made in energy rather than euros? What happens if the Port of Hamburg loses its function? What would be the spatial consequences if Germany measures its economic strength by the well-being of its citizens? The publication brings together different approaches to a forward-looking, interdisciplinary interpretation of the lived environment in Germany and contributes to highlighting new paths in the design of cities and spaces. Created on behalf of the German Federal Ministry.