Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

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

Hidden above a drug store on a nondescript corner of Lincoln Heights is a private clubhouse for intrepid explorers.

Secret Manor, a house full of legends, the least of which is the haunting of long-deceased ladies of pleasure.

Commonly referred to as the most photographed Victorian home in the United States.

A former utopian healing center created by a huckster and built by derelicts.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

From pre-war whiskey cocktails to prohibition-era speakeasy secrecy, this bar has seen it all.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

This private residence was the template for one of the most beloved television homes of all time.

Acres of natural wonders left behind by a socialite-turned-gardener.

The unbelievably opulent home built for an infamous newspaperman.

A bigger-than-life pun that has become a beacon of altruism.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

The abandoned personal amusement park of the King of Pop.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

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

Travelers exchange letters with woodland creatures at this mini post office.

A storybook European village in Berkeley.

An eclectic trailer park retreat in the middle of the California desert.

The largest permanent Monopoly board makes one of the longest games even bigger.

A meditative space out of a fantasy story.

This grand mansion has starred in everything from Bones to Buffy.

The programmatic glory of LA's giant whiskey barrel building has become an upscale reminder of the city's kitschy roadside past.