During the course of the twentieth century, communism took power in Eastern Europe and remade the city in its own image. Now, the regimes that built them are dead and long gone, but the buildings remain. Owen Hatherley’s new book is an intimate history of twentieth-century communist Europe through its architecture. He discusses this, also touching upon Krakow’s communist-era architecture, some of which are Unsound venues. In conversation with Agata Pyzik.