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

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

The oldest statue in the Netherlands has survived relocation, bombardment, and burial.

Portraits of musicians line Oude Binnenweg, the jazziest street in the city.

Four giant movable street lights decorate this modern Rotterdam square.

A strangely curved lamppost stands tall over this avenue in Rotterdam.

A nearly 25-foot concrete sculpture of Sylvette, Picasso's muse.

An early 19th-century English style garden hidden in the Rotterdam cityscape.

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

This charming pup is meant to celebrate the youth and stubbornness of the city's students.

An ornate tomb pays tribute to one of the most influential and cherished military leaders in Vietnam's history.

This French colonial post office is arguably the grandest in all of Southeast Asia.

A highly-criticized monument in Budapest has become the site of a makeshift Holocaust memorial.

This statue honors one of Budapest's most beloved literary characters.

This sculpture honors the man who was known as the "Righteous Among the Nations."

A stunning Art Nouveau cinema in the heart of Budapest.

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

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

On Gellért Hill, this statue depicts the tragic tale of lovers divided by the Danube.

The metal leaves on this tree are engraved with the names of Holocaust victims.

The true meaning behind this sculpture remains unknown.

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

This statue of a falling man commemorates a teenage martyr of the Hungarian Revolution.

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