There is a widespread fascination with lighthouses that often has nothing to do with the sea. They stand out in the land or seascape. Sooner or later, looking at lighthouses leads to questions about them, and in particular human questions - who, when, where, how? These do not simply refer to their construction, but also to who used and operated them - the mariners and keepers and their families. As part of the celebrations for Sea Britain 2005, Charles Payton tells the story of lighthouses, focussing on those that belong to the National Trust, or stand on National Trust land.