The light of Ouessant's lighthouse is made up of four lamps which provide a luminous power of 20 million candelas with an average span of over 60km. The scenery is depicted by amazing rocks, battered by the waves. The Museum of Lighthouses and Buoys in the former engine room charts the history of these light towers from antiquity to the present day. On display are turbines, lenses, lamps and reflectors; all of which bring to mind the keeper's functions and his life.