The GDM.NOVO wall on the Marktecke open-air site is representative of the redevelopment of almost 39 hectares of the city center. Within 23 years, the Brandenburgers have carefully redesigned a number of buildings as well as streets, squares and green spaces. The new stone wall replaces a disused masonry structure and was rebuilt using the openwork technique, which is more common in this region. The attractive surfaces were treated with proClean to repel dirt and moss.