Enormous pendulum helps keep Taiwan's tallest building from swaying.

Concrete strongholds stand guard over the Golden Gate.

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.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Once the fastest ship from San Francisco to Tahiti, the Galilee now lays in pieces in three different cities.

Standing in for the first ship to navigate the Northwest Passage.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

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

Only hotel where you can legally launder money.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

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

A masterpiece in Golden Gate Park by virtue of the artist’s debt.

Golden Gate Park's historic collection of plants.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

The legendary statue-hating superintendent of Golden Gate Park is honored with... a statue.

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