Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

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

This hidden amusement park is a magical escape for kids and kids-at-heart.

A remote crossroads honoring a fallen talent.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

The tallest bridge in California was constructed for a project that was eventually cancelled.

Bits and pieces from the ill-fated Donner Party's winter cabins.

Beneath a Virginia City bar is the entrance to an abandoned gold mine.

This silver-mining camp has been active intermittently from the 1860s to the present.

Once the largest town in eastern Yuba County now sits abandoned.

Built to hold Gold Rush wealth, this building has withstood the test of time.

A picture-perfect town, perfect for blowing up.

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

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

This hiking/biking/horse trail along an old railroad grade features trestles, tunnels, and a roadless stretch through the scenic Susan River canyon.

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

A showcase of engineering might that was also symbolic of westward expansion.

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

This lesser known Hearst estate is a fairytale village built from the stolen bones of historic European buildings.

This little museum has an exhibit devoted to the elusive forest denizens.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

One of the oldest reform schools in the United States, home to wayward boys such as Merle Haggard, now abandoned.

A fire lookout atop a glacial pinnacle is reached by climbing three vertiginous flights of stairs.

The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California."