Architecture is one of the most exciting cultural assets that Berlin has to offer. Not only is the rich architectural heritage internationally renowned, but year after year, Berlin's architects realize countless new projects - in the capital and throughout Germany. Architecture Berlin Volume 4 presents the most fascinating ones: restoration of gems like the House of Broadcasting, award-winning new buildings such as the Cologne :envihab, intelligently designed exhibitions, or open space designs like the Spreehafen IBA Hamburg. In addition, essays on current subjects and trends illuminate the Berlin architectural scene. They take a look - 25 years after the fall of the Wall - at the parks and green spaces that have emerged along the former inner-city border, connecting recreation and remembrance. They highlight how the idea of sustainable building has taken shape.