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

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

A remote horde of architectural treasures fit for Indiana Jones.

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

Ship skeletons haunt Baltimore's waterways.

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

An eerie, decaying ghost town destined to fade into the forest.

This abandoned sea fort has become an accidental bird sanctuary.

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

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

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

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

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

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

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

The world's largest fully steerable radio telescope.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

A historic coal mine that doubles as a museum and tourist attraction.

This abandoned school has had many lives since the early 1900s, and all of them doomed.

A table rock formation that has been intriguing West Virginians for years.

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.