Ship skeletons haunt Baltimore's waterways.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones’ locker.

The oldest military monument in the United States.

This 16-foot, intricately detailed model of the Gearing-class destroyer has been called the most detailed model ship ever built.

The tunnel under the Capitol Building where Congress takes out its trash.

One of the last active volcanoes on the Eastern seaboard.

An enormous warehouse filled with parade floats collected from over 50 years of patriotic celebrations.

These buildings are a poignant reminder of the thousands of horses and mules who passed through this area of the Shenandoah Valley on their way to war.

This sprawling farm was once a Cold War-era hideaway for the nation's top diplomats.

According to local history, this cast-iron canine was nearly melted down for bullets during the Civil War.

The first museum in the U.S. to address human rights issues in China.

This beautiful vintage movie palace has seen little change in form or function since the 1920s.

A small Richmond island dotted with the remnants of hundreds of years of history.

Memorial stone for GWAR vocalist, depicted in his iconic costume.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

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

The skeletal white beams stand as a monument to religious dissent.

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

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

A former Confederate hospital serves as a remembrance of wounded and dead soldiers.

This labyrinthine resting place of Black American leaders has been reclaimed by nature.

The ruins of an old mill lie in a small ravine along a hiking trail near Little Seneca Creek.

This propitious plastic porcine has been petitioning park visitors to pick up after themselves for more than 50 years.