Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

When ecosystems collide in the arid Southwest.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A mysterious air force base built to resemble a Long Island fishing village.

An unrealized dream to wirelessly electrify the entire Earth.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

A hillbilly theme park that proved so unpopular the land wouldn't even sell on eBay after it closed.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.