A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

Beloved children's TV characters freckle the German city's streets.

This historic stone bridge has an entire neighborhood clinging to its sides.

Little Red Lighthouse under the George Washington Bridge.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

The "feral child" who appeared in Bavaria in the 19th century remains as much a mystery as his unsolved murder.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

This lurid German fountain plots the sad course of marriage from dating to death.

The final resting place of one of Germany's most accomplished Renaissance men.

A museum that chronicles the history of the Nuremberg Trials for Nazi war criminals in the building where the trials were once held.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

An ornate sculpture of an ox in repose marks the former entrance to Nuremberg's medieval meat market, which was destroyed during World War II.

Nestled on the banks of a river in Nuremberg is a small museum that was once home of the city's official executioner.

A stairway to heaven, or to nowhere at all.

The first green space constructed on an elevated viaduct.

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.

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

A curious friendship between two inanimate ladies.

France's most famous cemetery, with some of its most curious tombs.

Paris' linguistic guide to the international language of, yes, love.

An old slaughterhouse now holds the largest collection of pig artifacts.