These subterranean storage areas hold emergency water reserves.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

The oldest dim sum restaurant in the United States is a nostalgic jewel.

Join the circus for a few lessons to learn clowning, acrobatics, and Chinese contortion.

A garden oasis filled with flowers mentioned in the works of William Shakespeare.

A Barbary Coast watering hole built into a Gold Rush shipwreck.

This 19th-century church is now a popular roller rink.

Visible below the waves are memorials to the city's Gold Rush dead.

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

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

Olfactory delights in San Francisco's Botanical Gardens.

The oldest continuously operating church in California.

Fake rail crossings mark the site of an influential doctor's demise.

The stately birthplace of California's statehood.

The first safe in this California town had to hold all the gold.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

This remarkably simple jail went over a century without an escape.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

A tree grown from astronaut seeds which were exposed to cosmic rays.

Only hotel where you can legally launder money.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

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

Gold Rush-era tombstones line the park's paths.

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