Concrete strongholds stand guard over the Golden Gate.

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

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

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

A miniature view of the park, caught in time.

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

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

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

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Approximately 250,000 people left homeless by the great earthquake and fires found shelter in Golden Gate Park.

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

The remains of a ruined mansion memorialize the 1906 earthquake.

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

Once the site of speeding horses, now home to picnickers and public concerts.

The oldest lawn bowling club in the United States.

A man-made island in scenic San Francisco Bay.

These WWII-era murals were initially booed as a libelous portrayal of the American dream but have survived multiple attempts to have them destroyed.

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

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

The miraculous hydrant that saved the Mission District in 1906.

This controversial depiction of the "Founder of California" looks as though it was sculpted from mashed potatoes.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

This shop specializes in oddities and Victorian-inspired wonders.

Art in the form of a winding, man made crack in stone.