Ten minutes past the Golden Gate Bridge, a cluster of 1940s wooden barracks sits at the edge of the Pacific. Fort Cronkhite was built during WWII's frantic mobilization, when the US Army threw up more than 100,000 temporary buildings to house a force that swelled from 200,000 soldiers in 1939 to around six million by 1944. Almost all those posts were torn down after the war. This one survived, and today it's one of the best-preserved examples left, folded into the Golden Gate National Recreation Area.
The fort's job was guarding San Francisco Bay, and the ridges above it bristled with artillery. Battery Townsley held two 16-inch guns — reportedly so powerful that a 1940 test firing shattered windows across San Francisco. When the threat shifted to the skies in the Cold War, Nike missile sites went up nearby, including SF-88 at Fort Barry. You can still explore Battery Townsley's restored interior, walk through original barracks, and follow a National Park Service self-guided History Walk that brings wartime life back into focus.
But this isn't just a history stop. Rodeo Beach, right next to the fort, is unusual for California: instead of golden sand, it's covered in red and green pebbles of jasper, carnelian and jade — great for beachcombing, less so for swimming, since strong currents make it hazardous. Surfers handle the waves; the calmer Rodeo Lagoon is off-limits to swimmers to protect its ecosystem, but an easy loop trail around it is superb for birdwatching on the Pacific Flyway. Beach wheelchairs are available with five days' notice.
Beyond the beach, the Marin Headlands network of trails invites walking, cycling and riding through protected coastal hills that erupt in wildflowers each spring. Look up for peregrine falcons and red-tailed hawks, and out to sea for migrating humpback and gray whales.
A full day is easy to fill. The Nike missile site at Fort Barry — the country's most fully restored — is free and opens the first Saturday of each month. The Marine Mammal Center behind the fort rehabilitates sea lions, otters, harbour seals and elephant seals; entry is free, behind-the-scenes tours cost extra, and reservations are required either way. Bird Island hosts one of Northern California's largest brown pelican roosts, and the Point Bonita Lighthouse makes a scenic hike — though its trail only opens on the third Saturday of the month. No camping at the fort itself, but four tent-only campgrounds sit in the Headlands; snag a spot at Kirby Cove and you'll wake to sunrise framed by the Golden Gate Bridge.
For travellers, this is a rare mix: a genuine WWII time capsule, a quirky pebble beach, and serious wildlife, all within a short drive of San Francisco. Who it suits: history buffs, birders, hikers and anyone wanting a quieter alternative to the city's usual sights.
