The world's largest indoor go-kart racetrack is hiding in 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.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

A miniature village lies nearly forgotten in the forest by the side of a major highway.

A red brick monolith is all that remains of New England’s first commercial brickyard.

The ruins of one of the first railroads in the U.S. lie hidden within a neighborhood cul-de-sac.

Colorful clay cliffs tower over an unofficial nudist beach on Martha's Vineyard.

This hidden labyrinth offers walkers some brief peace of mind.

A rock outcropping left by a glacier that made itself useful throughout the centuries.

This mysterious artificial cave has long puzzled New Englanders.

This massive boulder is inscribed with the story of a sensational hostage negotiation dating back to Colonial times.

At the supposed instruction of Ben Franklin and Socrates, a Spiritualist believer intended to birth a mechanical messiah here.

Hut with supplies for shipwreck survivors.

A coastal rock outcrop with mysterious inscriptions variously attributed to Native Americans, Portuguese, Phoenicians, Norse, and more.

Overgrown ruins of a turn of the century island fort that sees very few visitors.

The site of the first "historically true" UFO encounter in the U.S.

The macabre graffiti spectacle in a quarry in a Massachusetts forest reservation.

Resonating tubes make music from highway overpass.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

It's not a typo, now say it five times fast!

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

A mysterious collection of stones stand outside a small New England town.