Gigantic Romanian salt mines used to heal respiratory conditions.

This bone-filled cave got its name after they found 140 bear skeletons inside.

Romania's only crater lake with water as pure as if distilled.

The Natural History Museum that time forgot.

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

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.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

This massive underground salt mine now holds a sci-fi theme park in its depths.

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

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

The bizarre headgear looks like it was made for a fool, not a king.

This Georgian architectural masterpiece is the only cloth hall left in Britain.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

A 19th-century time capsule of travel, fiction, and historic texts still available to the public.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

Dating back almost 400 years, the oldest public collection library in the United Kingdom was once the study hall of Karl Marx.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

The tower was originally used as a chimney for the waste incinerator of St. John's Precinct and Market.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.