Ключевые слова: ancient, architecture, blue, boulder, building, bulgaria, bulgarian, bush, carve, city, civilization, clear, culture, destination, fortress, greek, green, hill, historic, historical, history, kardjali, landmark, old, orange, perperikon, rock, ruin, seat, sky, stone, structure, sunlit, sunny, thrace, thracian, throne, tourism, tourist, tradition, traditional, wall, yellow,