All that remains of one of the Civil War's more deadly POW camps is a simple flagstone.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

No one is sure if the world's fourth-largest diamond had been found in a rubbish heap or was pawned by Napoleon's mom.

An interesting look into 18th-century American history.

Opened in 1947, this is the oldest continuously-operating drive-in theater in New York.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

For a buck, students can snag freshly picked apples grown in the university orchards.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

A mysterious echo seems to defy the laws of acoustics.

A popular 19th-century natural landmark is now hidden within a sprawling forest.

After the state would not recreate this beloved rock formation, three New Hampshire brothers took things into their own hands.

The highest peak in the state of Vermont has some interesting features.

Come for the gun-toting hillbilly madman, stay for the ice-cream loving basketball bears.

Even Henry David Thoreau found this glacial pothole irresistible.

A serene plaza that commemorates one of the Granite State's most iconic figures.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Curtiss is a forgotten figure in the early history of flight.

A fictional town that was briefly brought to life before fading once again out of existence.

An abandoned castle owned and ignored by Masons carries a cursed history.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.

A marvel of Byzantine engineering under the streets of Istanbul.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.