A remarkably opulent mansion with a tragic history.

A network of fortifications that never saw conflict.

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

The North Carolina grounds are leased in perpetuity to the British Commonwealth for as long as the WWII sailors are buried there.

The final resting place of the hundreds of bodies originally buried where Badin Lake sits now.

Conjoined twins Daisy and Violet Hilton were stars of the vaudeville circuit.

The remains of this castle, known as the Witch’s Eye, watch over the Thur Valley.

Hidden in Carnfunnock Country Park is a lasting testament to the Normans who once settled in the region.

The ruins of this medieval castle overlook the lake of Piediluco in what was once a sacred forest.

An abandoned village that resides along the mountains of the Aosta Valley.

A crumbling mountain resort that looks like it was abandoned in an instant.

An abandoned village, frozen in time by the threat of a landslide.

Inside a state forest, the forgotten remains of a Cold War defensive installation.

Spend the night in this formerly abandoned traditional Scottish village.

Only three columns survive from this ancient temple in the town of Cori.

An overgrown and abandoned tuberculosis ward resides in the midst of a quaint modern neighborhood.

A mountain of conch shells created by centuries of fishermen.

To fit bodies into this Renaissance crypt, they were first left to decompose in the crypt's rotting room.

These abandoned Cold War-era bunkers are now a designated refuge for endangered bat species.

A decaying garage hidden amid the dense forest is all that remains of a once-prosperous dairy farm.

Nestled in an unassuming residential area, this "forbidden forest" is rumored to spirit away those who dare enter it.

This national park dedicated to the tallgrass prairie ecosystem still displays its military past.

This New York estate was designed to resemble a medieval Scottish castle.

In northeastern Poland, the ruins of a massive granary overlook the Narew River.