Top-notch German architectural photographers Petra Wittmar and Ulrich Deimel document the remarkable structures created in the interwar period in North Rhine Westphalia. Master builders including Dominikus B?hm, Fritz Schupp, Peter Behrens and Bruno Paul are represented through such structures as the Zollverein mine building and the Disch house in Cologne. "Unknown" masterpieces are celebrated as well.