The best place for scenic views of the DMZ and North Korea.

Secret North Korean passage discovered below the world's most dangerous border.

Booksellers and public artworks fill this vibrant promenade along the disused railroad tracks.

The world's longest bridge fountain has hundreds of nozzles that create a beautiful, illuminated spectacle.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

This historical Netherlands fortress still bears the marks of its single siege.

Incredible labyrinth of man made caves.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

In the heart of Luxembourg's "little Switzerland" weaves a breathtaking natural sandstone canyon with a mythological past.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

Third time's a charm, or in this case, two testicles are.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

Artistic tombs, monuments, and a beautiful "Hall of Fame" lurk inside this cemetery.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

Along the edge of this fountain are 365 smaller fountains that represent the days of the year.

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