Ключевые слова: america, american, architecture, boston, building, capital, city, cityscape, common, dome, downtown, england, freedom, gold, golden, historic, historical, house, landmark, library, ma, massachusetts, metropolis, metropolitan, modern, new, outdoor, park, parkway, public, sightseeing, staircase, stairs, state, states, street, tourism, trail, travel, united, us, usa,