A unrivaled and rather horrifying collection of wax dermatological models.

A museum of carnival attractions where you are invited to ride the rides.

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

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

A Museum of Psychiatry in a still-operating mental institution.

In an area where the remnants of WWI are discovered on a regular basis this preserved frontline trench may be the most amazing.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

Historical figures from New York City's Catholic community reside in Midtown.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

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

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

More gold than anywhere else, ever.

A hip bar decorated with walls of golden skulls.

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

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.