Condemned US Navy seaplane control tower turned officers’ club sits atop Yerba Buena Island.

A rococo retro-futurist future-rustic vernacular between yesterday’s tomorrow and the future that never was.

Furniture tries to escape an abandoned building in San Francisco.

This painted marvel is San Francisco's 400-foot ode to urban biking.

Chevron maintains one “Standard” brand station per state so it doesn’t lose the trademark.

Guns that have been defending San Francisco since 1904.

Recovered from the brink of extinction, at home in the Financial District.

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

A man-made island in scenic San Francisco Bay.

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

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

Golden Gate Park's historic collection of plants.

This private residence was the template for one of the most beloved television homes of all time.

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

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

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

An essential stop before plundering, BYO Cutlass.

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

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

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

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

San Francisco's newly reopened hands-on science museum.

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

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