The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

A Hungarian optometrist's charming collection of Asian art and curiosities.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

A forgotten graveyard lost in the tangles of an overgrown garden.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

This hidden art nouveau gem was designed by an architect in search of a national style.

A fake Transylvanian castle houses a cathedral of antlers.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

Budapest's Communist-era statues, banished to the suburbs.

A Hungarian pharmacy museum with a box full of mummy powder.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

The oldest olive tree in Greece has been bearing fruit for at least 2,000 years.

An ancient octagonal weather station named for the eight Greek gods of wind.

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

This little Greek plateau is home to thousands of rustic, white-sailed windmills.

According to myth, Zeus himself was hidden in this cave to escape being eaten by his dad.