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.

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

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

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

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

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

A huge musical instrument played by the ocean.

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

A psychedelic labyrinth on the San Francisco bay.

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

A monumental cross hides in the trees in Golden Gate Park.

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

An overlooked and unassuming engineering marvel.

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