Though tiki culture has gone in and out of fashion, the Tonga Hut has always been flying the flag in Los Angeles.

The abandoned personal amusement park of the King of Pop.

One of the last free public hot springs is decorated with hippie art.

This massive redwood tree has a hole in the base big enough to drive through.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

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

San Francisco's newly reopened hands-on science museum.

Tiki luxury on Nob Hill.

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

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

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

A psychedelic labyrinth on the San Francisco bay.

A fashion designer's dazzling world of Japanese collectibles is hidden in a warehouse downtown.

Sister store to the Echo Park Time Travel Store.

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

Rainbow-hued local gem in Venice.

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

America's most famous piece of self-built architecture.

Every weekend, the parking lot of this Buddhist temple turns into a Thai street-food paradise.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.