Ключевые слова: alexander, architecture, blue, building, bulgaria, bulgaria sofia, bulgarian, capital, cathedral, center, christian, christianity, church, city, clouds, color, colorful, cross, culture, day, dome, eastern, europe, european, european landmarks, exterior, golden, history, icon, landmark, monument, morning, nevski, nevsky, old, ornament, orthodox, religion, religious, saint, sky, sofia, sunrise, temple, tourism, tourist, tower, tradition, travel, worship,