The exhibition shows Klaus Paier’s photographs of his wall paintings in public space. On the night before the opening, Paier paints a work in the arcade in front of the Neue Galerie, which is threatened with immediate removal. The exhibition also features the video made by his friend Josef Stöhr, who often accompanied Paier on his nocturnal forays: Mauerbilder aus Aachen – Video zur Ausstellung, 1984. The video is part of the collection.