This historic Rhode Island mini-cemetery features a number of headstones run through with mysterious holes.

This Rhode Island mansion was a stand-in for the exteriors of Collinwood in the original "Dark Shadows" series.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

Mysterious stone tower featured in many alternative histories of the New World.

This mountain tram provides stunning views while hanging from a single, steel thread.

Natural catch-basin rocks covered in thousands of drawings spanning many millennia.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Marking the spot where a conquistador gave up his search for the fabled Seven Cities of Gold.