Ключевые слова: ancient, antique, architecture, art, brickwork, city, city wall, culture, figure, gate, germany, heritage, historical, history, hoerl, installation, karl marx, kommunism, landmark, marx, masonry, monument, old, old town, orange, ottmar hoerl, plastic, porta nigra, remains, rheinland pfalz, rhineland palatinate, roman, ruin, sculpture, stone, treves, trier, world heritage,