Cabrillo (144 acres/58 ha), natl. monument, S Calif., in city of San Diego, San Diego co., at Point Loma, W of entrance to San Diego Bay, 5 mi/8 km WSW of downtown San Diego, on Pacific Ocean. Memorial to Juan Rodríguez Cabrillo, Port. explorer who claimed U.S. West Coast for Spain, 1542. Old Point Loma Lighthouse (1880s). Tidal pools have marine life. Authorized 1913.