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

A library and museum dedicated to typography.

Hidden among the multi-million dollar mansions in the Santa Cruz hills is a sanctuary for troubled birds.

Playable, historic pinball machines fill this Alameda museum.

This restaurant features Native American foods from across the country.

9,000 square feet of vintage and modern mechanical toys, dioramas & sideshow curiosities.

A store that sells all manner of bones, insects, and animal curiosities.

Nose around a unique collection of more than 300 natural aromas used to craft perfume fragrances.

Where the alchemists dream of transmuting base metal into gold was actually achieved.

Handmade treasures from around the world.

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

Bonsai garden in Oakland is curated by the first non-Japanese female bonsai master in the United States.

This mysterious series of teeny guerrilla installations sheds a whimsical light on street art in Oakland.

A temple devoted to inner esoteric mysteries located in a California commercial strip.

A popular tourist cave with a dark past.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

Unique antiquarian shop specializing in globes, maps, and prints.

This former Norwegian sailor's church is slowly being taken over by ramshackle robot musicians.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

Sniff the Titan Arum's rotting flesh.