Each summer, the migratory bats living beneath the bypass form "batnadoes" at dusk.

This museum looks at the history of one of America's most famous prisons and most beloved albums.

A large instrument played by the wind.

Olfactory delights in San Francisco's Botanical Gardens.

Golden Gate Park's historic collection of plants.

The neighborhood church casts a breast-shaped shadow that locals have come to call the “two o’clock titty.”

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Art in the form of a winding, man made crack in stone.

A hidden subterranean installation offers a view of the sky.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

This old-world mansion with lush gardens is a gem in the heart of Silicon Valley.

The timepiece that exonerated a labor radical accused of a parade bombing that killed ten people.

The perfect spot for a picnic, right next to a giant ballistic missile.

The former Naval shipyard is open for exploring - mostly.

The oldest Naval chapel in the United States is home to an incredible collection of Tiffany stained-glass windows.

The oldest Naval cemetery on the West Coast.

A unique and poignant sidewalk mural commemorates the deaths of two striking workers.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Dive bar built out of the remains of a whaling ship.

This quaint archive of the silent era preserves and pays homage to a seminal moment in film history.

A stone nook where Frederick Douglass escaped the world to think, read, and write.

This haunted 17th-century pub was moved to a new city when it was already almost 300 years old.