During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A 140-year-old castle with underground caves hidden in San Francisco.

A garden oasis filled with flowers mentioned in the works of William Shakespeare.

San Francisco’s condensed garden of incredible plant growth.

The oldest lawn bowling club in the United States.

At the base of the Golden Gate Bridge, a small sign basically begs for a high-five.

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

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

The best place in the park to test out your throwing arm.

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

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

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

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

Half of a house.

A promotional sun clock on the site of San Francisco's great raceway.

The restored and active Victorian-era final resting place of San Francisco.

A monument to the love people have for their pets.

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

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

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

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

A museum befitting the city responsible for supplying the majority of the world's LSD.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.