A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

St George's Leprosy Museum depicts the gruesome afflictions of those suffering from the disease.

Potato-peeling mannequins, Inca art, and a dangling tuber mobile help trace the history of fries at this Belgian museum.

Incredible labyrinth of man made caves.

A floating cat sanctuary on an Amsterdam canal.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

This legendary city has been a tourist attraction for centuries.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The hallucinogenic center of the ancient world.

Monasteries on rock pillars, once accessible only by frayed ropes.

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.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

The most visited, and possibly most controversial, museum in Germany.

This 700-year-old Cyprus castle is the birthplace of the world's oldest wine, said to be toasted by Richard the Lionheart at his wedding.

The water here is so clear you can see the mysteriously sunken ship from the surface.

Island wonderland for communist autocrats.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

The medieval "dragon" on an Austrian city's coat-of-arms comes to life in a fountain.