A creepy steel gremlin has protected the Bay Bridge since 1989.

A 300-ship graveyard, with a few still visible at low tide.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

The first fresco Diego Rivera painted in the United States can be found in the former San Francisco Stock Exchange.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

An abandoned relic of the city's failed experiment with below ground transit.

Where beautiful signs live on forever.