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

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

A more than 260-year-old crypt built on Boston's oldest English burial ground.

Civil War Fort on an island in the Boston Harbor.

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

Hut with supplies for shipwreck survivors.

A mysterious stone embedded at the base of a historic Boston building.

The homestead of American patriot John Adams.

The filming location of a shark attack in Steven Spielberg's famous shark movie.

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

This ambitious father and son team reigned supreme over the North End, and witches, for many years.

Impossibly life-like natural history models created out of glass by a father and son.

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

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

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

The site of Paul Revere's historic two lantern warning.

A historic bridge with a lovely acoustic anomaly.

Three prestigious academic collections come together to create a world-class natural history museum.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

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

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

Millions of numbers carved in glass represent the tattoos forced upon victims.

The world's largest piece of copyrighted artwork.