Pompeii's less famous neighbor is still revealing her secrets.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

A 12th-century fortress containing some of Berlin's oldest buildings.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

A fascinating insight into daily life in the Eastern Bloc.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

A wunderkammer of mysterious objects and stories.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

This 18th-century folly is one of Europe's rare "garden mosques."

This historic funicular system combines the old with the new while offering delightful views over the surrounding valley.

A top-secret bunker now turned museum, is an eerie look at what life would have looked like in the event of nuclear war.

The jaw of one of humankind's earliest ancestors on display at an overlooked geology museum.