High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

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

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Abandoned railway line circling the city of Paris.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

These brass bunnies honor the rabbits that dominated the no-man's-land around the Berlin Wall.

Floating swimming pool within a moored vessel.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

A dilapidated dock tells the story of Titanic's missed arrival.

Try not to get slimed in Tribeca.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A terrific purveyor of natural history objects and curios.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The stone labyrinth in this New Orleans city park was laid to symbolize healing in the wake of Hurricane Katrina.