Creating this diorama spurred naturalist Carl Akeley to begin advocating to protect the apes.

Here be dragons.

This impressive scene portrays the elusive forest giraffe of Central Africa.

This poignant display is now a memorial to these regionally extinct species.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

Unrepaired walls from a 1920 anarchist bomb attack.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

This presidential tomb was not dedicated until years after Harding's death due to personal controversy.

This statue of the "father of television" stands prominently in the United States Capitol.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

The only Leonardo Da Vinci painting in the Western Hemisphere.

A historic lighthouse steeped in rumors of ghost and pirate stories.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This church built atop a gas station promises to "equip you for the next stage in your life’s journey."

At 207 feet, one of the world's longest continuous escalators.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

The hippo that stands on this university campus was once a drunken flea market purchase.