A World War II battle site made famous by one man's heroic actions.

Nationwide network of co-ownership underground catastrophe shelters.

Ancient pueblos built into the base of a natural canyon wall.

When life gave this firefighter a forest fire, he made a rough-hewn sculpture park using a chainsaw.

The oldest continuously operating church in California.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

These four islands right offshore have waterfalls, colorful lights, fancy buildings, and a secret purpose.

This midcentury LA bar was the birthplace of tiki culture.

Rusty pieces of metal jutting out of a breakwater are all that's visible of the 12,500-ton ocean liner that capsized just off the beach.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The graffiti-covered remnants of a former triangulation station are balanced precariously on this California peak.

A giant chess set, minus the psychedelic drug trip.

A Roman-inspired temple once controlled half of San Francisco's waters.

A classically inspired temple in Redwood City.

This odd California folly seems like it was almost designed to accumulate urban legends.

San Francisco Bay's ghost town.

The world’s first stop-motion film was created on the racetrack outside this building.

This small monument to the great inventor contains a time capsule and a Wi-Fi hotspot.

A trail weaves through the verses of a poem illustrated by stone sculptures inspired by Native American pictographs.