A unique columnar residence built in the 19th century.

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

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.

Civil War Fort on an island in the Boston Harbor.

A defunct all-girls college which may be the resting place of H.P. Lovecraft's real-life Necronomicon.

This small shop walked so America could run on Dunkin'.

The homestead of American patriot John Adams.

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

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

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

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

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

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.

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

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

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

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

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

Carved fountains poignantly placed in parks and in front of special monuments.

The last bastion of Roman presence north of the Alps looms over a German town.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

The prototype for all Nazi concentration camps.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.