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

The Pentagon is so large that it was planned like a city, complete with internal highway infrastructure.

Right next to departures—how convenient!

The remains of a historic plantation nestled in between a parking lot and the rental car return at Reagan National Airport.

An 18-mile-long tunnel for sewage waste will soon wind within the bowels of Washington, D.C.

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

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

Remains of a historic fountain that was mysteriously lost in the demolition of a D.C. traffic circle.

An eccentric company offers eccentric millionaires the opportunity to have spaceflight-related experiences.

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

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

Exact replica of the ancient monument, but much, much lighter.

A double agent hid information for the Soviet Union beneath this bridge for more than 20 years.

A whopping 14,000 copper coins cover this miniature fighter jet.

This simple stone memorial remembers a secret, Geneva Convention-defying interrogation base from WWII.

A state park that once served as an important river crossing, and now offers protected lands for endangered plants and animals.

A graveyard that dates back over 200 years stands near a busy shopping center.

The U.S. Army's giant warehouse of war art includes Hitler’s watercolors and Norman Rockwell oil paintings.

A 14-foot monument marks the resting place of two of the town's earliest residents—and one unknown soldier.

Hear, smell, see, taste, and touch history at this immersive Civil War hospital.

A lone historical marker off the highway and scattered debris are all that remain of this Cold War-era missile site.

The FBI's urban training course may have the highest fake crime rate in the world.

One of the oldest train stations still standing in Virginia played a vital role during the Civil War.