You feel uneasy the moment you enter Jan Zakrzewski's "Sky over Poznan" exhibition (opening April 28 at Kunstlerhaus Bethanien in Berlin and running until May 23). The room is small, somehow narrow. Two big mirrors form a sort of corridor. Once the space served as a vestibule, but, given the room's historic function, perhaps it should be called an antechamber - a place watched over by an armed guard or servant. Unauthorized people would never be allowed to enter.
With good reason. For the creeping anxiety that you feel derives from an awareness that the space where Zakrzewski's exhibition first appeared, in Poznan, was once meant to serve as a vestibule leading to a room where Adolf Hitler awaited you.