After being destroyed by IRA sympathizers, the ruins of this stately Irish manor have sat vacant for decades.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

The fairy tale castle of the "fairy-tale king."

A neo-Gothic castle in the Argentinian countryside.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

A dangling church built over a Colombian gorge.

Not far from a popular beach, an unfinished, abandoned mansion for Bulgaria's last communist dictator.

Crossing a suspension bridge above a forest is the only way to reach this 12th-century monastery.

A spectacular Bulgarian cave resembling a devil's head with a waterfall rushing down its throat.

These natural cliffs look like they are a part of an old castle complex.

The ceiling of Prohodna Cave in northern Bulgaria affords a peek at the sky via two deity-sized-eye-shaped holes.

These cascading falls resonate throughout the Bulgarian forest.

An architectural marvel that spans the Arda River, and has stories of a haunted past.

A Gothic cathedral created from volcanic rocks.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

Eclectic collection of dark and macabre antiques.

Abandoned castle was once a grand example of Russian privilege, built exclusively to win a frivolous bet between noblemen.