Fort Point (San Francisco)

Where it sits. Fort Point stands directly beneath the southern end of the Golden Gate Bridge, on a low rock shelf at the narrowest point of the strait, where the tide runs hardest. It is a three-tiered brick and granite casemate fort, roughly square, with a seawall on its bay side and the bridge's steel arching over its roof — an image so improbable that first-time visitors often assume the fort was built afterwards as a decoration. The opposite is true. The fort came first by seventy years, and the bridge was redesigned to save it.

Why it was built. The Spanish had a battery here from 1794 at a promontory called Cantil Blanco, the white cliff. After California joined the United States, the Army cut the cliff down to about six metres above the water and built a Third System fortification between 1853 and 1861, the only casemate fort of its kind on the Pacific coast. It used more than eight million bricks, with granite quarried in China Basin and Folsom for the corners and the two spiral staircases, and was designed for 126 cannon firing through vaulted embrasures at any ship attempting the strait. It was garrisoned throughout the Civil War against a Confederate raid that never came, and its guns were never fired in anger. Within a decade of completion, rifled artillery had made masonry forts obsolete everywhere in the world, and the building was effectively finished as a weapon before it was finished as a building.

How the bridge saved it. By the early 1930s the fort was derelict and stood exactly where the bridge's southern approach needed to go. Joseph Strauss, whose reputation rests on the span above, argued that the fort was a work of engineering worth keeping and redesigned the approach to leap it, adding a steel arch of about 98 metres that carries the roadway over the building. The arch cost money the project did not have and took time the schedule could not spare. It is the reason the fort exists, and it produces the site's defining view: standing on the fort's parade ground and looking straight up through the arch at the underside of the bridge deck.

On screen. The seawall beside the fort is where Alfred Hitchcock filmed the pivotal scene of Vertigo (1958). Madeleine Elster, followed by Scottie, walks to the water's edge below the fort, scatters the petals of a bouquet into the bay and then jumps; Scottie hauls her out and carries her up the slope. It was shot on location in 1957, and everything in the frame is still there — the brick wall, the seawall, the south tower of the bridge, the current running past. The water is genuinely dangerous at that spot, cold and fast, and the scene's plausibility depends on it. Fort Point also stands in for coastal fortifications in a range of later productions, but the Vertigo connection is the one that draws people to the seawall.

The surf break. On big winter swells from the northwest, a long left-hand wave peels off the rocks immediately west of the fort, refracting around the point and running towards the bridge pier. Fort Point is one of the best-known and least forgiving breaks in the city — a rock bottom, water in the low teens, savage tidal current on the ebb, ship traffic in the channel and debris coming out of the bay. It works only a handful of days a year and is not a place for visitors to try. Watching it from the fort's upper tier on a big swell, however, is one of the more remarkable spectacles in San Francisco.

What a visit involves. Admission is free. The fort is usually open Friday through Sunday, and hours have varied since 2020, so confirming before travelling is worth the two minutes. Inside, the casemates on the lower tiers are cold, dim and echoing, the granite spiral staircases climb four levels, and the roof — the barbette tier — puts you at the height of the bridge's roadbed with the strait laid out in both directions. A lighthouse, the third on this site, was installed on the roof in 1864 and still stands. Rangers run cannon-loading demonstrations and occasional candlelight tours in winter.

Getting there and timing. Marine Drive runs down to the fort from the Presidio's Crissy Field, and the walk from the Crissy Field promenade takes about twenty-five minutes with the bridge growing steadily overhead. Parking at the fort itself is very limited; the Presidio's free shuttle and Muni routes reach the Golden Gate Bridge Welcome Center above, from which a footpath drops down. Wind funnels through the strait almost constantly and the site is fully exposed — it is reliably ten degrees colder here than in the Mission. September and October give the clearest air; a big winter swell gives the surf and a good deal of spray.