How are changing conditions in society likely to affect Germany's built environment? What are the catalysts for transformation in its cities and regions? 'Speculation Transformation' is devoted to the social and spatial transformations that Germany will face in the future, speculating on their architectural consequences: What is it like to live in a city where the currency is watts instead of euros? What would happen if Hamburg's harbor were to be filled in as reclaimed land? Who is living in the Maintropolis? What would be the spatial consequences if Germany were to measure its economic strength based on the well-being of its citizens? This publication combines different approaches to a future-oriented, interdisciplinary interpretation of Germany as a human habitat, which help to open up new directions in the design of cities and landscapes. An atlas of architectural culture with contributions by Thomas Auer, Armen Avanessian, Stefan Bergheim, Matthjs Bouw, Armin Linke, Erik Swyngedouw, as well as numerous interviews and memos. On behalf of the German Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety (BMUB) and the German Federal Institute for Research on Building, Urban Affairs and Spatial Development (BBSR). 100 illustrations