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

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

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

There’s a hidden military meme engraved on the World War II Memorial.

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.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Home to a vast and influential collection of Shakespeareana.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

The site of the climactic scene from the classic horror film is now a historic landmark.

A wondrous old library overlooking the nation's capital.

This poor little statue is the most vandalized memorial in Washington.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

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

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

The romance of early commercial flight still fills this Art Deco destination.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.