This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Eclectic collection of dark and macabre antiques.

Offering commanding views of the California coastline, this restaurant was a hub for the artists and bohemians of Big Sur.

Hidden beneath a lake for decades, this brutalist mine has now emerged from beneath the receding waters.

This former boomtown "island" is now submerged below Folsom Lake.

The capitol city's oldest existing cemetery.

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

This historic California cemetery holds the bodies of veterans of both the Civil War and the Donner Party.

Neoclassical Revival mansion and set of horror cult classic Phantasm.

Internationally-recognized arts center housed in a century-old former military barracks.

A 140-year-old castle with underground caves hidden in San Francisco.

Gold Rush ship-turned-hotel buried underneath San Francisco's financial district.

A 300-ship graveyard, with a few still visible at low tide.

An unusual round church in London with a Templar past.

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