The airport was once a Civil War battleground, and the earthwork defenses can still be seen today.

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

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

The Kirkland Monument remembers a selfless Civil War hero who braved the battlefield to give water to his dying enemies.

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

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.

The iconic statue was moved to a new spot overlooking the James river after several years as a mascot for the local baseball team.

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

Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.

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

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

Under a playground is a little-known sealed train tunnel that likely contains the bodies of workers trapped by cave-ins.

Lines from a walking song are etched into a rock in Natural Bridge State Park.

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

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

A convincing little bit of ancient Egypt smack dab in Richmond, Virginia.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

These unusual rooms on wheels are holdovers from the 1960s.

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

Giant busts of 42 U.S. presidents sit, crumbling in a field in Virginia.

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

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

An original apothecary from 1792.