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

Where America's first doomsday cult awaited the end of the world.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

Pennsylvanian mass grave and possibly mass murder.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

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

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

The Home and murder site of the witch of Rehmeyers Hollow.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

Bizarre Cavern.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

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

This abandoned sea fort has become an accidental bird sanctuary.

Remnants of a storybook amusement park hidden behind a strip mall.

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

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

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

The ruins of this long-abandoned unsuccessful gold mine can still be found.

The house where John Wilkes Booth conspired with his co-conspirators.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.