Nine centuries-old fortresses guard the walls of this medieval Romanian city.

This snug medieval lane is one of the narrowest streets in the world.

Something's watching you.

One of the oldest churches in Romania is believed to have been built on the site of a pagan temple.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

No one knows who built this strange cave of worship or exactly why.

Conspiracy theories and occult legends surround this mysterious natural rock formation.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

When the river dries up, these stones start talking.

Abandoned substation turned village treasure.

A larger-than-life statue of the German revolutionist stands proud in a small town where he never lived.

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.

Every part of this unusual home is built into the sandstone rock.

An enormous and lavish Gothic church in Czechia.

Underneath the city that invented pilsners are a series of historic tunnels that have been storing beer for centuries.

Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

A spiral staircase twists to the top of this unusual Czech lookout tower.

Bohemian paradise covered in majestic forests.

An old asylum graveyard that's been abandoned for half a century attracts those seeking a dark thrill.

Europe's second largest ossuary wasn't discovered until 2001.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.