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

The remains of a hospital ravaged by fire, once a progressive place of innovations for disabled children.

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

Haunted boulder in a front yard with a witch painted on it.

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

A tiny monument to the classic American candy.

A unique columnar residence built in the 19th century.

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

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

One woman’s obsession gave birth to this lovely oddity at the Boston Public Library.

The mansion home of author Edith Wharton.

This Dutch-styled residential building was originally a cocoa company's World's Fair showpiece.

Civil War Fort on an island in the Boston Harbor.

The oldest surviving wood-frame building in North America is still in the family.

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

A careful eye can find hundreds of dinosaur tracks running along the Connecticut River.

New England's "Witches of Eastwick" locations, in all of their quaint white churched glory.

One of America's most historic homes also holds a startling literary legacy.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

The remnants of a Gilded Age elegance preserved in the middle of a stark modern tower.

Hut with supplies for shipwreck survivors.

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

One man’s hobby is another man’s world of metal wonders.

Historic Hull Street was actually the first street with a proper name in the Boston area.