LONDON - MAY, 2017: Clock on the outside of the Royal Exchange building, Cornhill, London, EC3

royal exchange cornhill city of london ec3 financial district outdoors day architecture modern architecture neo-classical architecture architectural detail building exterior clock camera surveillance security coat of arms facade landmark famous place tourist destination finance banking business history time monument grand architectural decoration street urban setting city life sunlight blue sky flag union jack handheld selective focus close up london uk summer 2017