This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

Home of modern dancer famously strangled by her own scarf.

These subterranean storage areas hold emergency water reserves.

Created in 1972, the famous sculptor's intricately detailed monument to San Francisco is overflowing with city landmarks.

Only hotel where you can legally launder money.

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

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

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

Guns that have been defending San Francisco since 1904.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

A masterpiece in Golden Gate Park by virtue of the artist’s debt.

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

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

A mysterious painting of the self-declared Emperor of the United States watches over a local hof-brau.

One of few lasting examples of the brief octagon craze that developed into folly.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

The grand, column-fronted, sculpture-adorned home of the ambitious digital library.

A library built during San Francisco's pioneer times is a student's retreat, bibliophile's sanctuary, and chess player's delight.

Half of a house.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

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

This turn of the century masterpiece has a mysterious goaty interloper.

Golden Gate Park's historic collection of plants.

An overlooked and unassuming engineering marvel.