The 1848 discovery of gold in the hills of California brought
prospectors and adventurers west; many came across the country on the
treacherous western trails, while others came by sea. The rugged coast
of California and the dangers of the San Francisco Bay waters claimed
many ships and their passengers. The loss of these ships and the
ever-increasing number of vessels converging in the San Francisco Bay
made it evident that navigational aids were desperately needed. To
enhance maritime safety in the region, the San Francisco Bay's first
light, located on Alcatraz Island, began construction in 1852. Light
stations soon followed at Fort Point, Point Bonita, and the Farallon
Islands. An additional 15 lights later served the bay, and two
lightships were stationed outside the Golden Gate.