Current docking place of the SS United States, the fastest transatlantic ocean liner.

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

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

This former Cold War missile control site played an important role in the creation of GPS.

Standing for over 200 years, the abandoned home of a Revolutionary War hero and later a succession of prison superintendents.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

Before Metro, Washington had a robust streetcar network—and you see the remains of this infrastructure if you know where to look.

The most accurate timepiece in the world.

An out-of-place Air Force radar dome is all that denotes this park as a former missile launch site.

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

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

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The whole world in one water tank.

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

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

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

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

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

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

The maritime museum that boasts the largest nautical library in the western hemisphere.

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.