This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A stealthy Apache hideaway that became the haunting site of a mass grave.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

The ghost town that ended up on Ebay.

One of the ghostly stops along Route 66.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

George Lucas donated this park to honor the birthplace of his two biggest movie franchises.

Abandoned landscape once home to "the world's largest winery."

Once the largest winery in the world, this castle-like building now sits abandoned on the San Pablo/San Francisco Bay shore.

The haunting ruins of Jack London's dream house.

The former Naval shipyard is open for exploring - mostly.

'Cause the fence start shaking, the earth was quaking.

A poignant memorial to a young boy whose death spurred a dramatic increase in organ donations in Italy—dubbed the "Nicholas Effect."

Massive prehistoric mammals used these stones as oversized scratching posts.

This abandoned boat was left in place thanks to its rotting beauty.

A tribute to the life and work of the beloved "Peanuts" cartoonist.

The southernmost outpost of the Russian Empire in colonial America.

An enchanting tunnel of cypress trees leads to an old morse code station still used today.

Built by the inventor of the radio, this abandoned hotel has housed early radio employees, military men, and a dangerous cult.

Monumental sculptures of Patrick Amiot, constructed from debris, detritus, and determination.

Nursery with extensive collection of flesh-eating plants operated by the author of "The Savage Garden."