A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

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

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

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

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

The land is home to swimming ponies and a legendary 18th-century treasure.

A priceless collection of the Nation's cryptologic history.

This free, take-a-book shop seems like a trick but isn't.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

The man who first patented the Ouija board rests in peace beneath a headstone that playfully reflects that achievement.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

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.

A restored schoolhouse was once a vital part of the Black mill workers community in Arkansas.

A beautiful South Korean gate and garden in Little Rock honors American Taekwondo.

The scant remains of an expansive indigenous civilization can be seen at this Arkansas state park.

Bronze statue marks the spinach capital of the world.

This historic bridge has weathered fires and floods and still stands, now abandoned, where it has stood since 1874.

The Old Mill shown in the opening credits of “Gone With the Wind” is actually fairly new, and was never a mill at all.

Twenty-year effort to raise a castle using tools and techniques from the 13th century is now abandoned in the Arkansas woods.

The only diamond mine in the world where you can keep what you find.

This ambitious attraction was the brain child of a lake resort impresario, and built by the WPA.

Colin Stokes "got a bit carried away" and built a castle that looks like something out of Tolkien.