germany-nonnweiler: works for complete or part construction and civil engineering work./ new construction of the hunsrück-hochwald national park exhibition and visitor center in nonnweiler / otzenhausen - locksmith work./ the zweckverband nationalparktor keltenpark is building a visitor center with exhibition rooms and restaurants as a starting point and arrival point for visits to the hunsrück-hochwald national park. the building will be erected as a hybrid reinforced concrete timber construction with a curtained, rear-ventilated timber façade and a gently sloping green roof. the special features of the building lie in a cross-shaped floor plan with rounded inner corners, as well as the partial ding in the terrain, so that visitors* can overcome the natural topography inside the building.