Ключевые слова: a line, airport, america, architecture, boarding, building, city, cityscape, colorado, commute, day, denver, depart, departure, dia, downtown, gloomy, historic, landmark, led light, light rail, luggage, metro, public, rail, railroad, railway, rtd, shallow depth of field, sign, signs, skyline, station, street, subway, terminal, tourism, train, train hub, train station, transit, transport, transportation, travel, union station, urban, us, usa, winter,