Moshe Safdie claims that probably more than fifty percent of his work is unbuilt, and upon review he considers that unbuilt work to be some of it is the most significant work he's done! In this richly photographed book, replete with detailed diagrams, sketches, models and studies, Moshe Safdie explains that for those who design in order to build, not succeeding in building is not a failure - there are many different reasons why things don't get built, but they form a fascinating track through one's thoughts and career; also a historical reference of the social and political forces at play at the time. This important volume is not only a treatise on Safdie's unrealised concepts but also a wonderful account of how there is valuable heritage to be mined in the unbuilt.