The oldest farmer's market in America is so ancient it was approved by the King of England.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

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

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

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

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

Located at the former Lorton Prison the Lucy Burns Museum tells the story of the 91 year history of the prison including the dark chapter of its involvement in the women's suffrage movement.

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

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

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

The narrowest house in America is seven feet of pure spite.

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

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

A former major munitions plant that has been converted into a sprawling art space.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

This pun was simply waiting to come to life, and one defense contractor made it so.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

Parking garage where Bob Woodward met Watergate source "Deep Throat."

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

Outsider art meets paleontology at this roadside reptile repository.

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

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

FDR's Art Deco hospital tower was hopelessly inefficient.