In 1869, Swiss and German immigrants settled in this small town in the mountains of West Virginia.

Spectacular mineral formations fill these caves, which have been used for everything from smoking meat to stashing illicit liquor.

This harrowing climb along West Virginia's jagged spires is one of the only Via Ferrata on America's east coast.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

A cult archaeology conspiracy theory claims these West Virginia petroglyphs were written by Irish monks in Ogham.

An abandoned Victorian-era amusement park is rusting away amidst luxury houses.

An abandoned theme park with a strange and tumultuous past.

"Not too many people can say they've had a nuclear bomb dropped on them, not too many would want to." — Walter Gregg.

This abandoned lighthouse looks like a rusting oil rig, but has managed to survive a number of storms.

A curious collection of oddities including a lock of Alexander Hamilton's hair and Harry Houdini's ouija board.

From failed port town to Civil War fort, the ruins of this former defense saw their finest day in the television age.

A mailbox that saved a nature reserve.

What is it about mushrooms that makes people wish they lived inside of them?

A castle built by an eccentric medieval enthusiast in rural Ohio.

A folk art mecca famous among outsider art fans.

This research center for rare prosimians is studying how they sleep to help prolong human life.

Enormous lake at the bottom of a unique cave system.

Amazing pre-Civil War ruins alongside a shallow, rocky river that hosts beautiful (but endangered) lilies.

A 120-year-old legend concerning an empty circular patch in the North Carolina woods.

This historic mansion was built as a symbol of love between a husband and wife.

Now in disrepair, this 19th century station was a stop on of the famed B&O Railroad.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

A "hospital" where people went to be quarantined, die, and be buried in the yard.

An abandoned asylum incorporated into a college campus.