Used as a military post in three different engagements, this fort has remained incomplete and unfired upon for nearly 200 years.

This painting of a beloved dog will be on display at the Scottish National Gallery at long as the museum exists.

This cannonball embedded in the side of an Edinburgh house once served a surprisingly pedestrian purpose.

The fountain marks the area where hundreds of accused witches were burned at the stake.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

A sweet symbol marks the place where torturous executions were once carried out.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

Poetic, metallic giraffes adorn a square off an Edinburgh thoroughfare.

Brass bricks outline the locations of Edinburgh's lost, lively market stalls.

An artist's whimsical transformation of everyday objects.

The colorful stairs are made with marble from the world's major quarries.

This mundane post marks the old location of the city's main postal hub.

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

This kitschy tavern is also home to rare early editions of "Treasure Island."

South Dakota's oldest operating brewery is housed inside a historic firehouse.

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Every president in history is immortalized in bronze in downtown Rapid City.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

This charming fountain honors Felix Salten, the creator of the iconic storybook deer.

Its interior is adorned with some of the best examples of early Christian mosaics.

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