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.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

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

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

The Corinthian columns that towered over Abraham Lincoln’s inauguration stand proud.

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

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

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

Experience the pivotal Civil War battle at this interactive museum.

This mobile theater show highlights the story of Hershey through fun facts, unique stories, and plenty of candy samples.

Dinosaurs, magic, and wonder are hidden amid the forests of Allaire State Park.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

This haunting monument honors the victims of 9/11.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

An abandoned textile mill that is now home to art and concerts.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

John Tyler never got to be buried at his beloved home, but every pet his family owned since has been.