Stock photography, photos: United Nations Plaza Stock photos of Muni and Bart signs at at United Nations Plaza in San Francisco, CA. Photograph: © Michael Evans Click for a larger image and more information Keywords associated with this stock photo: muni, bart, flags, flag, sky, construction, crane, market street, san francisco, california, transportation, subway, untied nations plaza, plaza, travel, un, u.n., untied nations, holiday, vacation, transit, train, bus, bus stop, underground