This giant head is all that remains of a once proud statue that survived an earthquake but not a fall off of a wagon.

Guns that have been defending San Francisco since 1904.

San Francisco's most expensive hotel suite includes a secret passageway rumored to have been used by JFK.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

Tenacious mummies survived dental problems, eternal entombment, and more than their fair share of devastating fires.

This shop and studio is dedicated to the art of the book, from letterpress to bookbinding.

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

This turn of the century masterpiece has a mysterious goaty interloper.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

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

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

In this century-old literary safehouse, print is alive and well.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

An essential stop before plundering, BYO Cutlass.

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

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

A psychedelic labyrinth on the San Francisco bay.

A huge musical instrument played by the ocean.

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

A 140-year-old castle with underground caves hidden in San Francisco.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

An artsy hidden staircase leads to breathtaking views of San Francisco.

The home of the first American-born saint is one of the only curved buildings in New York.

Magnificent New Deal Murals evoke a time when New York City harbor was one of the world's greatest and busiest ports.