Also known as: Fort Point Light, Fort Constitution Light, New Castle Light Station Established: 1771 Present Tower Built: 1878 Automated: 1960 Construction Material: Cast Iron & Brick Lining Tower Height: 48 feet Focal Plane: 52 feet Optic: Fourth Order Fresnel Lens (1854) Characteristic: Fixed Green Visibility: 12 nautical miles Fog signal: One blast every 10 seconds. Other buildings still standing: 1872 keeper's house, 1903 oil house.