The beautiful baroque library of the Hapsburg empire.

This Austrian museum celebrates the work of famous forgers and their inimitable imitations.

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

The (usually) serene burial place of the world's most notorious drug lord.

A theme park attraction designed to turn your children into LARPers.

If there's another drive-through golf-cart bar in a bat-filled cave on top of a mountain, we don't know about it.

French commune at the heart of conspiracies.

Series of underground houses inhabited continuously for centuries.

A unique underground structure dating back to the 1st century BC.

The oldest still-inhabited hill fort in India looks like a magnificent golden sandcastle.

The iconic castle that withstood a magnitude 6.2 earthquake has become a symbol of resilience.

This ruined fortress was the stronghold for a persecuted medieval leader and his infamous Assassins.

The 400-year-old remains of the samurai invasion of Korea.

A rare example of an ancient Japanese hill castle believed to be the fortress of a legendary demon.

Just outside of Jordan's capital lies an ancient castle and intriguing caves dating back to the Copper Age.

The Syrian headquarters of alleged hashish-smoking assassins.

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

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

A medieval church built up to defend its village.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

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

This unusually shaped fortress houses a blend of centuries-old frescoes and modern art.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.