Hohenkammer Castle is one of the few remaining Renaissance moated buildings in Bavaria. Refurbishment work carried out in the 1970s had unfortunately destroyed much of the historical substance. The timber-beam floors, for example, had been largely replaced with aerated concrete elements on steel beams. Since it was not possible to reverse these measures and to reinstate the original form, the architects sought to align the various time planes and create a unified whole. Historical elements that had survived were carefully preserved. In installing modern conference and seminar facilities, many of the earlier changes were reversed or reformulated, and new measures were implemented as inconspicuously as possible.