Conzelman Road will take you around Horseshoe Cove and to a security gate near the Golden Gate Bridge. Unauthorized vehicles are not permitted, but pedestrians and bicyclists can enter the area of the road that passes under the north end of the Golden Gate Bridge.
The lighthouse structure in the distance, under the bridge, is the Lime Point Fog Signal Station built in 1883. See photo next page.) The residences no longer exist at the point, but the fog signal still operates.
Source: National Park Service