Ключевые слова: amphitheater, amphitheatre, ancient, antique, archaeological, archeology, architecture, balkans, blue, bulgaria, bulgarian, column, day, destination, eastern, emperor, europe, european, greek, historical, history, landmark, marble, odeon, odeum, old, past, philippopolis, plovdiv, proscenium, roman, ruin, ruins, sky, stage, steps, sunny, theater, theatre, tilt shift, tourism, trajan, travel,