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

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.

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

17th century palace once a meeting place for politicians.

Romania's triumphal arch looks out over Bucharest.

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

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

A unique seaside cave where Aleister Crowley faked his own death.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

The world's oldest bookshop still in operation.

Located in the mountains of Nicaragua, one man has spent most of life beautifying a massive cliff by hand.

Volcanic activity causes small pools of super-heated mud to boil furiously.

This lush Florida island is home to the ruins of a crooked ship breaker's tiny empire.

Austin’s nonprofit-run graffiti park where street art is meant to be painted over.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

The final resting place of New Orleans' most famous voodoo priestess.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.