Ключевые слова: aerial, america, american, architecture, attraction, boston, bridge, building, bunker, business, center, charles, charlestown, city, cityscape, district, downtown, drone, economy, financial, harbor, helicopter, hill, house, landmark, landscape, leonard, ma, massachusetts, memorial, metropolis, modern, plaza, river, sea, sightseeing, skyline, skyscraper, square, states, style, tour, tourism, tower, travel, united, urban, usa, view, zakim,