Point Diablo Light, Wooden lighthouse in Marin County, US.

Point Diablo Light is a small white shack with a pitched red roof, built into the steep coastal slope about 15 metres (50 feet) above the water, roughly halfway between Point Bonita and Lime Point on the northern side of the Golden Gate. A solar-powered beacon sits on top of the shack, and a steep staircase leads up from the water to the station.

The United States Lighthouse Service built this navigation aid in 1923 to guide vessels through hazardous waters near the Golden Gate entrance. This structure became crucial as shipping traffic increased in this busy passage.

Point Diablo Light was tended by the crew of the Lime Point Light Station, who visited once a week and could switch the beacon on remotely by telephone and power cable. Reaching the station from the water meant climbing a steep stairway cut into the cliff.

This lighthouse sits on steep headlands and is difficult to reach from land. Photographers need specialized equipment with long lenses to capture images of the remote structure.

The station was linked to Lime Point by telephone and power cable, letting Lime Point's keepers run and monitor it remotely; a crew visited once a week for maintenance. It first had two lens-reinforced lanterns and an electric siren, and is now automated with a solar-powered beacon and a foghorn.