The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

This macabre painting of a Shakespearean scene looks like something out of a nightmare.

Some 2,000 carvings show this rare desert spring has been an oasis for travelers for over a thousand years.

Performers, intricate sets, and a real speakeasy tell the story of the 18th Amendment.

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

The oddly shaped, steam-spewing building is now an art studio and gallery.

This campus chapel is Robert E. Lee's final resting place and a topic of debate about the legacy of the Civil War.

The hide of Stonewall Jackson's equine sidekick is on display not far from where the ashes of his bones are buried.

An astounding collection of medical specimens, including bits of President Lincoln.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

Born a slave on the Arlington estate, Parks dug the first graves at Arlington National Cemetery, and was buried there, too.

The rogue roots are gradually consuming some of the historic marble grave markers.

The naval commander’s proudest moment in battle is memorialized in this unique tomb at Arlington Cemetery.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

A mammoth pair of Civil War artillery guns abandoned out in the forest.

A celebrity from the late Cretaceous period.

Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

Remains of a historic fountain that was mysteriously lost in the demolition of a D.C. traffic circle.

The span is crooked and made from two older recycled bridges.

An allegorical sculpture in Maryland wears the artist’s politics on its trunk.

A tribute to the beloved, kind-hearted "homeless mayor" of Silver Spring.