The massive machine creates cracking displays of indoor lightning.

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

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

"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."

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

Museum dedicated to awful artwork.

The homestead of American patriot John Adams.

The nation's second-ever First Lady urged the founding fathers to "remember the ladies."

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

The world's largest piece of copyrighted artwork.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

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

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

A men’s restroom became a sandwich shop.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

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

The history of the tea trade is told in bas-relief on this historic pair of Boston doors.

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

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

This landmark cemetery in Boston was created more than 300 years ago.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

Narrowest house in Boston.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.