An Italian hillside ghost town.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The beautiful baroque library of the Hapsburg empire.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

A stunning silver lining to global warming's gloomy cloud.

The gutted remains of this Estonian mansion are a monument to a tragic love.

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

A natural wonder in south Denmark.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

Ruins battered by centuries of war and disaster offer a wondrous glimpse of medieval Ireland.

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

A remarkably intact castle that once was the largest in Ireland.

A rocky Irish outcropping with a history of wealth, conflict, and ruin.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Naturally preserved bodies are eerily staged throughout the crypt in varying poses.

The remains of a town so thoroughly destroyed by French forces that the citizens simply left.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

A 19th-century shrine covered with prosthetic body parts as votive offerings.

A prime example of New Orleans' unique architecture these early 20th century homes were built to look like steamboats.

Rising from the sea like a stone monster.

An entire city block built completely out of petrified wood.

The deserted railroad town had a last gasp as a ghost town attraction before being abandoned for good.