This taxidermy horse was a Civil War hero.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Ruins from the Parthenon and petrified wood line the interior of one of the world's most famous monuments.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

An overlooked memorial honoring the local Washington residents who died in World War I.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

Decades before the scandal, this staircase on the river was a literal "water gate."

This spot memorializes one of the greatest plays in NFL history, unless you happen to be a Raiders fan.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This statue of one of baseball’s greatest pitchers looks like something out of a sci-fi horror movie.

Part of a WWII submarine is lurking outside the Washington Navy Yard parking lot.

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

The U.S. Navy’s preposterously detailed mini battleship took 77,000 hours to complete.

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.