America's only nuclear missile silo open to the public.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

Steepest flood safety railway in the entire world.

Step inside Lucy, the world's largest "elephant."

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A toxic ghost town sitting atop a massive coal fire.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

Bizarre Cavern.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

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

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

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

A museum dedicated to exhibiting remarkable outsider art.

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.

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