This grinning pup statue is all that's left of what was once a ubiquitous Bay Area diner chain.

A modest reminder of treacherous waters at the Golden Gate.

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

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

A classic advertising icon immortalized in regal bronze.

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

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

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

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

The sole surviving relic of the San Francisco neighborhood cobbled together from old horsecars and streetcars.

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.

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

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

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

A bronze tribute to a legendary Californian, the self-proclaimed "Emperor of the United States."

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

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

Sitting atop San Francisco's tallest hill, a cross honors the victims of the Armenian genocide.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

These six walrus head statues harken back to a time when this area wasn't far from the oceanfront.

This tall and trim architectural oddity is one of the skinniest buildings in San Francisco.

Gold Rush ship-turned-hotel buried underneath San Francisco's financial district.

Noble beasts perhaps, but not the Emperor's dogs.