A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

Golden Gate Park's historic collection of plants.

The only theatre in the world constructed specifically for sound movement.

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

With the touch of a button, you can read a randomly selected short story.

A creepy steel gremlin has protected the Bay Bridge since 1989.

The first AIDS memorial chapel in San Francisco and one of only a few in the U.S.

An overlooked and unassuming engineering marvel.

An artsy hidden staircase leads to breathtaking views of San Francisco.

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

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

This small oasis of flora and art was created in remembrance of a local auto business owner.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

A speck of nature and art in one of San Francisco’s most notorious neighborhoods.

Adolph Sutro's little-known, geographically inaccurate, deprecated monument.

Art from the latest counter-culture; kids who dye their hair blue and believe the future will be a post-apocalyptic water world.

Furniture tries to escape an abandoned building in San Francisco.

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

A massive ultra-modern church presents a science-fiction view of Catholicism's inclusive future.

An art collective teaching the more fiery, metal-y art forms.

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

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

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

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