Today most lighthouses use rotating beacons, with light from incandescent lamps, and various types of electrically powered fog signals and auxiliary radio navigation systems. In areas where it is impractical to construct buildings to house a beacon, lightships and lighted buoys are often used. In the United States, maintenance of lighthouses, lightships, lighted buoys, and other aids to navigation is the responsibility of the U.S. Coast Guard. New Zealand famous for its lighthouse. The state of Maine has 62 lighthouses.
Lighthouses are more helpful than churches.