This mysterious artificial cave has long puzzled New Englanders.

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

Where Eunice Williams was murdered by natives, and where locals say her ghost still haunts.

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

It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

This headstone-like marker inscribed with three words has been an utter mystery for over a century.

An elaborate, hidden model train in the Needham Town Forest.

A steampunk wonderland that preserves America's history of industrial innovation.

These whimsical works of art tell the story of the city's past and present.

This rare symbol of Eastern philosophy in the West has been created over years of painstaking construction by the local community.

This candy-colored storybook village originated as a 19th-century Methodist campground.

A stunning garden filled with fantastical environmental folk art and sculptures.

The pleasant woodland cemetery that has inspired more than its fair share of wild legends.

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

Stay at this storybook estate, featuring Sir Henry Hudson Kitson's masterpiece "Gingerbread House."

Palatial mansion estate used in films including "Flowers in the Attic" and "The Witches of Eastwick."

Trash escaped from a landfill to fill beaches with all kinds of treasure.

The bears may be gone, but their old cages can still be found.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

Beautiful steampunk ghosts of early Massachusetts.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

The Mysterious Witch Bonney, a haunted statue in an old industrial city.

This former Masonic hall has been turned into an art project that uses even more metaphysical iconography.

A New England ghost town features a trail of boulders etched with intriguing life lessons.