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

A strange house built only at night, with rumored mystic inspiration.

A library of rare occult books in Los Angeles.

Rainbow-hued local gem in Venice.

Olfactory delights in San Francisco's Botanical Gardens.

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

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

A prohibition-style speakeasy takes up residence in the last Victorian residence in Hollywood.

Towering basalt columns, a creation of fire and ice.

Its buzzing collection honors vibrator history.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

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

Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.

The ghostly remains of an accidental sea.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

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

Venue for strange sideshow displays and musical acts.

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

A trash dump made beautiful by nature's power.

Shop selling 500 flavors of soda has something for everyone.