A psychedelic labyrinth on the San Francisco bay.

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

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

San Francisco's first World's Fair, dedicated to the wonders of California.

A monumental cross hides in the trees in Golden Gate Park.

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

This surreptitious shop is only open five hours per week.

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

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

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

Over 315,000 preserved amphibians and reptiles in jars.

A famous alternative culture epicenter and where Joplin serenaded young hippies.

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

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

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

A 300-ship graveyard, with a few still visible at low tide.

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

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

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

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

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