A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

Strange rumors surround the artist who created these solemn metal guard dogs.

On a small Slovenian island, diners can mix and match a classic cake into dozens of sweet and savory flavor combinations.

This abandoned Slovenian military barracks has become a punky-political art squat.

This one-time health resort was used by aristocrats around the world.

A whimsical bridge adorned with decorative dragons.

Stunningly detailed mosaics in a New York subway station bring life to the Weimaraners of artist William Wegman's work—and to thousands of commutes.

This miniature village stays behind in the Breuer Building, even as the museums around it come and go.

Phil Mortillaro uses keys to bring art back to the Village.

This block in downtown Brooklyn was a hotbed of antislavery activism along the Underground Railroad.

Nope, not Washington Irving's house.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

The highest rapid transit station in the world.

Unrepaired walls from a 1920 anarchist bomb attack.

Walk over a 150 year old manhole.

For 20 years, local pumpkins have met their fate on the iron fence surrounding this Cobble Hill home.

Christianity and Islam have clashed, yet here a Serbian Orthodox church and a mosque stand together.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

A tribute to the beloved, kind-hearted "homeless mayor" of Silver Spring.

A large boulder marks the place where the island of Manhattan was purportedly "sold" to the Dutch.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

The boulder on which Alexander Hamilton laid his head as he died can still be visited on the New Jersey coast.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."