This isn't your average roadway—it's actually a National Park and a transportation pioneer.

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

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

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

A small Richmond island dotted with the remnants of hundreds of years of history.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

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

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

Washington's iconic carousel has a nice piece of Civil Rights history.

Politicians, bureaucrats, and military officers gathered in this field near the Capitol to settle their disputes with blood.

Once America's tallest structure, now a Baltimore landmark.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

The most accurate timepiece in the world.

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

The national park was once a plantation estate.

A derelict bit of transportation infrastructure hidden in the woods.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

The United States Capitol's former columns still stand.