This lighthouse is located in the Las Cabezas de San Juan nature preserve on the northeastern part of the highest point of Cape San Juan in Fajardo, Puerto Rico. There is now a marine laboratory and a nature center at the lighthouse. The laboratory is operated by the College of Humacao of the University of Puerto Rico.
Tower Height: 45
Height of Focal Plane: 260
Description of Tower: White, cylindrical stone tower with black band around base.
Other Buildings?: 1880 one-story stone keeper's house.
Date Established: 1880
Date Automated: 1975
Optics: 1880: Third Order Fresnel lens; now DCB-24.
Current Use: Active Aid to Navigation. Marine Laboratory.