The "Seinfeld" diner.

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

An odd museum dedicated to French fakes.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

The artist and his brother are buried in a landscape straight out of a van Gogh painting.

Ghosts of France's colonial past.

Former hunting lodge of a duke who was an avid collector of impressionist works.

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

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

Noirish green neon marks the location of one of the oldest private detective agencies in France.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Christ's blood preserved in a Belgian town.

Since 1920, one small company has defined the distinctive chairs of Paris' sidewalk bistros.

Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Electrical curiosity museum housed in an old transformer station.

Once the home of a hermetic monk, this cave now houses a small church.

There aren't too many operational funiculars around, but Pittsburgh has two!

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Mysterious rocks that ring musically when struck.

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

The history of radiation is on safe display at the foot of a radiation science laboratory.

This unreal Portuguese palace looks as though it's made from a pile of different castles.