Ключевые слова: architecture, balkans, building, buildings, bulgaria, capital, center, city, cityscape, classic, cultural, culture, destination, europe, european, exterior, famous, historical, history, houses, landmark, outdoor, outside, park, past, pedestrian, people, philippopolis, plovdiv, plovdiv region, roman, sight, sightseeing, street, structure, thracian, tourism, town, travel, tree, trip, urban, walking, walking street,