Ключевые слова: 2019, aged, amphitheater, ancient, antique, archaeological, archeology, architectural, architecture, background, balkans, basement, building, bulgaria, bulgarian, column, cultural, culture, europe, european, excavation, forum, heritage, historic, historical, history, house, landmark, marble, material, nation, novel, odeon, odeum, old, pillar, plovdiv, rough, ruin, settlement, stage, stone, town, unesco,