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

The final resting place of soldiers' loyal canine companions.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A six-ton wedding present for the King of the Scots.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

Protecting the dead from opportunistic body snatchers.

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

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

A famous burial ground with a history both grim and literary.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

The highest point in South Carolina was once owned by an energy company that neglected it but now the state is taking it back.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

Final resting place of the author who wrote the ghost story "The Turn of the Screw," and his brother, the Harvard doctor and paranormal investigator.

Hundreds of personalized inscribed planks make up this historic boardwalk.

The first transatlantic wireless communication between the U.S. and Europe took place here in 1903.

This original Mason-Dixon line cairn placed in the 1760s was put in the wrong location because of the gravitational pull of the Allegheny Mountains.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

The beloved, war-tested mascot of a Union regiment graces their battlefield monument.

A diorama of the Civil War, fought by cats.

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

Delaware's first railroad lasted only five years and spanned only 16 miles, but its ticket office has survived for two centuries.

Many of the most significant figures in American history once hopped on a stagecoach in this alleyway on their way to more noteworthy destinations.