"The Dialectic City" represents one of the most interesting attempts to face the problem of the design in the urban peripheries, and in the new voids born with the generalized industrial crisis. The main theme of the book is developed around a series of competitions won by the Ungers office in the past years in Germany; the projects became a natural condition to experience a coherent methodology of work in a different urban condition. The process of unification in Germany became an important occasion to define a methodological approach to be applied in other urban contexts. An essay by the authors introduces the eight projects and enlightens the problematics and the methodology applied. The projects concern several German cities (Berlin, Köln, Magdeburg, Rostock, Neuss Hammefeld) and different urban conditions, and offers an interesting example to face analogous situations. Going far beyond modernism, or the post-modernism of our times, the work of Oswald Mathias Ungers has grown into a unique body, including some prestigious buildings as the Galeria of Frankfurt, the German Museum of Architecture in Frankfurt, and the Polar Research Institute in Bremenhaven. The United States played an important role in Ungers� life: in 1970 he opened an architectural office in Ithaca N.Y., from 1975 till 1986 he was professor of architecture at Cornell University, and in 1994 he built the German Embassy in Washington D.C.