The hook
A working 1874 Victorian lighthouse on its own tiny island in San Pablo Bay — run as a five-room inn where the innkeepers boat you out, cook you dinner, and fire up the original foghorn.
01Why it's worth it
East Brother is one acre of rock off Point San Pablo with a gingerbread lighthouse that's been guiding the strait since 1874; when automation made the keepers obsolete, a nonprofit saved the station by turning it into one of the country's strangest B&Bs. The stay is the experience: a short boat ride from a hidden Richmond harbor, champagne on the landing, the innkeeper couple (the only other people on the island) cooking a multi-course dinner, a demonstration of the huge original diaphone foghorn, and a night in a keeper's bedroom with container ships sliding past the windows and San Francisco glowing to the south. It's not cheap and it books out months ahead — but as the atlas's definition of a unique stay (the reason the 🛏 filter exists), it's hard to beat. Day-curious? The Point San Pablo Harbor side trip alone — a ramshackle, houseboat-and-sculpture corner of Richmond nobody visits — is worth the drive.
02How to experience it
Book at ebls.org (Thursday–Sunday nights; day tours occasionally offered). You board the boat at Point San Pablo Harbor — allow time to poke around the harbor's own oddball charm. Pack light, expect wind, and don't plan an early exit: the boat goes when the boat goes.