Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

An abandoned stretch of highway, deteriorating next to the operational one.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

Eco-friendly island mansion.

A railroad magnate's replica village has become home to a genetic seed bank for rare breeds of livestock.

A crumbling stone stable and carriage house are all that remain of a manse that was once filled with Egyptian artifacts.

A virtually untouched "home on the hill" for the flora and fauna of Rhode Island.

Final resting place of one of the classic authors of horror literature.

Who knew the Devil's domain was a hot spot for tubing?

This historic park site contains the last remnants of a once bustling canal system.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

An abandoned gun-funded 19th century utopia.

A famed data visualizer's personal sculpture garden is a landscape of modern and megalithic wonders.

A few stone foundations and an old graveyard are all that is left of this once thriving settlement in the wilds of Connecticut.

A seasonal movie monster museum featuring wax creations by a relative of one of the original Universal Studios monsters.

The ancient past meets the retro-future at these dinosaur tracks that are protected by a geodesic dome.

137 graves holding New England's earliest residents.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

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

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