Monument to a forgotten NYC disaster that claimed the lives of 1,000.

This impressive mansion in Vinegar Hill has some mysterious details in its architecture.

Abandoned 19th century homes once occupied by naval officers, soon to be demolished.

Detailed facade of a brownstone in Boerum Hill.

This 19th century brick building in Brooklyn stands out like the anachronistic landmark that it is.

Play heads or tails with thousands of different coins.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

This luxury shopping lane has been protected by its own tiny police force for over a century.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

A little piece of Paris in the sultry south of the U.S.

This New Orleans statue of a portly figure in a goofy hat pays homage to a classic of satirical literature.

This historic Melbourne bullet factory is fully encased in a massive glass and steel cone.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

This modest marker near Notre Dame identifies the very center of Paris.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

This little-known relic crypt holds stolen parts of a Roman Empress.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

This study room in the New York Public Library saw the creation of one of contemporary America's greatest traitors.

Once the tallest building in the world and the site of “the highest dinner ever held in New York” this building now holds the most expensive penthouse in the city.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.