A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

According to a satirical conspiracy theory that persists today, this German city of 300,000 is a hoax invented by the CIA.

A Nazi concentration camp and Anne Frank's place of death.

A peculiar trapezoidal building covered with wonderful humorous reliefs.

On the highest peak in the Harz Mountains, science and the occult faced off in a failed attempt to turn a goat into a boy.

What was once thought to be a wellspring of unicorn bones is actually just a prehistoric burial site.

Time stands still at this serene burial ground in the center of Budapest.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

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

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

An industrial site turned into Hungary's most cherished natural wonder.

Hungarian self-built castle.

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

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

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.

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

Museum dedicated to the terror regimes of Hungary.

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

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

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

A dramatic art installation features a BMW flying out of a building in Rotterdam.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

The site of the notorious Great Train Robbery of £2.6 million, one of the biggest heists in English history.