Abandoned bridge hidden deep in the San Gabriel Mountains.

One man's vast collection of artifacts and ephemera from matchbooks and postcards to vintage neon signs and cars.

Visible below the waves are memorials to the city's Gold Rush dead.

A modern mechanical planetary system, part of a 10,000 year clock.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

The ghost town that ended up on Ebay.

This Los Angeles animation studio is keeping the wonder of stop motion puppetry alive.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Tiki luxury on Nob Hill.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

Quite simply the largest tree in the world (by volume).

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

A collection of 20th-century automata, penny arcade games, and musical contraptions.

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

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

Gift shop offering toe tags and chalk body beach towels tucked into a coroner's office.

Olfactory delights in San Francisco's Botanical Gardens.

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.

Its buzzing collection honors vibrator history.

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

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

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

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