Stock photography, photos: Copenhagen Metro Stock photos of Copenhagen Metro Photograph: © Niels Poulsen Click for a larger image and more information Keywords associated with this stock photo: travel, europe, scandinavia, denmark, copenhagen, metro, transport, transportation, traffic, trains, go, travel, travelling, architecture, build, buildings, people, wait, stop, stand, passengers, lights, steel, glass, subway, tube, tunnel, abstract, underground, escalator, moving, staircase