A shining, cold, black organ lies in San Francisco's financial district.

Faceless white figures loom over the city from the rooftop.

The oldest dim sum restaurant in the United States is a nostalgic jewel.

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

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

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.

Today's aerospace industry can be traced back to one man and his gliders.

One of the oldest adobe structures in Northern California.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

This California museum is home to one of the largest collections related to the 'Treasure Island' author.

A psychedelic labyrinth on the San Francisco bay.

A free, public museum dedicated to the fascinating science of sight.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

The only visible piece of San Francisco's most famous shipwreck.

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

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

Where a staggering 747 ships were constructed during World War II.

A B&B on a Victorian lighthouse station in San Francisco Bay.

Once the largest winery in the world, this castle-like building now sits abandoned on the San Pablo/San Francisco Bay shore.

Abandoned landscape once home to "the world's largest winery."

A large instrument played by the wind.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.