This massive World War II calculator hearkens back to the days when "computer" was a job title.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

One philanthropist's extensive collection of knick-knacks and curiosities is now a public museum of oddity.

For 20 years, this whale skeleton has been slowly dripping oil on the floor of the museum where it hangs.

The homestead of American patriot John Adams.

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

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

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

This evocatively named natural crevasse was created by a torrent of water that smashed right through a granite deposit.

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.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

An enormous, inside-out glass globe built in 1935.

Over fifty whirling pools left by the glacial age.

This building is more than 250 years old and was built in one of the first towns settled in Massachusetts.

An eccentric inventor's castle home with its own indoor weather system.

The final resting place of New England's last "vampire."

One of the most scenic falls in Massachusetts has a history of death and grim legend.

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

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

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

Tucked away in downtown Westerly is America's first shark history museum.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

The first bell ever cast in Boston was cast by Paul Revere...and sounded terrible.