Climbing to the top of the cathedral's bell tower offers sweeping views of these medieval ruins.

The ancient Greek Titan guards this massive dam holding a lightning bolt to symbolize electricity.

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

A medieval church built up to defend its village.

This once-derelict building is now one of the most beautiful bookstores in the world.

A stunning 18th century pharmacy and medieval chemist's collection.

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

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

Something's watching you.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

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

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

An ancient knight and a symbol of the city's freedom.

The now-overgrown beach resort was once frequented by Yugoslav military elite.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

The attic of a four-century-old canal house hides a clandestine church.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

The great American road trip, but smaller.

Tucked away inside a historic Savannah hotel is a hundred-year history presented in ladies' lids.

A self-made museum in Queens, New York continues to display the work of a sculptor known for paving his own way.