The largest catacomb system in the world.

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

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

The narrowest street in Paris.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

The site where two doves fell in love.

Some locals believe the fabled lost gold of General Yamashida is hiding somewhere beneath the city.

Smoked mummies housed in mountainside caves.

Imagine having a street run right through your home, or better yet, a historic bridge three stories high.

Why walk on this historical site when you can zoom down instead?

This remote island, home to the easternmost point in Denmark, once hosted pirates and a military fortress.

This 19th-century Hamptons windmill was once home to modernist painter Agnes Pelton.

This private island is still in the family after a 400-year history including a witch hunt and a pirate.

This cemetery holds the remains of an accused witch and the man that ensured her freedom.

The last used bookstore in Downtown San Francisco is one of the smallest bookstores just about anywhere.

The largest lake in the Faroe Islands seems to be held hundreds of feet above sea level thanks to an optical illusion.

Internet rumors, often involving Icelandic singer Bjork, have abounded regarding this isolated outcrop of rock.

This fantastical house shaped like a seashell brings aquatic design to architecture.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

A mysterious inscription may hold a clue about the "Lost Colony" of Roanoke.

A beautiful and controversial modern sculpture that alludes to the Aztec past identity of the Virgin of Guadalupe and the phenomenon of syncretism.

The outside of this theater is decorated with a Diego Rivera mural that explores the history of Mexico.