A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

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

A miniature view of the park, caught in time.

Depicting scenes of everyday life - and specific individuals - in Great Depression era San Francisco.

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

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

A winding path built in secret on the edge of the continent.

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

Home to one of the world’s largest collections of model yachts.

Shoot for par over the bodies of the dead on this cemetery-cum-golf course.

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

A monument to the love people have for their pets.

A huge musical instrument played by the ocean.

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

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

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

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

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

The restored and active Victorian-era final resting place of San Francisco.

The oldest lawn bowling club in the United States.

A famous alternative culture epicenter and where Joplin serenaded young hippies.

The rustic cabin-like decor of this Arts and Crafts-style church reflects the love of nature central to its little-known theology.