Humboldt Harbor Light was an early lighthouse built to guide ships into Humboldt Bay and warn them from the hazardous north spit after Eureka’s founding in 1850. First lit in December 1856, it was the last completed of the original eight West Coast lighthouses and used a design like the original Point Loma Light, with a central tower and keeper’s house. Its sandy, exposed site soon proved untenable as heavy seas, fog, earthquakes, and high water repeatedly damaged the station. After funding for Table Bluff Light arrived, its lens was moved there in 1892 and the old station closed. Only ruins and the rescued lantern cupola survive.