Ключевые слова: aerial, architecture, balkan, belgrade, belgrade serbia, bell tower, belvedere, building, church, city, cityscape, danube, danube river, dunav, europe, fortification, gardo, gardos, gardos tower, historic, horizon, houses, landmark, landscape, lookout, millennium tower, monument, novi beograd, old, river, roof, roofs, serbia, serbian, sightseeing, skyline, street, tourism, touristic, tower, town, travel, urban, zemun, zemun belgrade, zemun serbia,