Ключевые слова: aerial, america, architecture, beautiful, blue, building, buildings, business, california, center, city, cityscape, district, downtown, downtown district, dusk, famous, finance, financial, francisco, high, hills, house, landmark, metropolis, modern, office, office building, panorama, pyramid, san, san francisco county, sf, sky, skyline, skyscraper, street, structure, sunset, tourism, tower, town, travel, urban, urban scene, us, usa, view,