This former asylum for Black Americans is haunted by its history of violence and racism.

This methodist cemetery is slowly receding into the wilderness along a Maryland highway.

One of the earliest and best-preserved buildings in Charles County, Maryland.

This Asian-inspired tower in a lush urban park provides spectacular panoramic views of Baltimore.

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

The ruins of an 18th-century mansion that was once named "Mistake" by the man who had it built.

Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.

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

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

A Civil War Museum with some notable medical antiques.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

A hidden alley in urban Baltimore is a haven for graffiti artists.