Civil War Fort on an island in the Boston Harbor.

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

Founded by the famed children's book artist, this museum spreads an appreciation of the arts through picture books.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

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

Shelves covered in dozens of coffee bean varieties fill this North End institution.

A spooky and decrepit mental health facility is slowly being replaced with newer digs.

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

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

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

Books you don’t need in a place you can’t find.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

Palatial mansion estate used in films including "Flowers in the Attic" and "The Witches of Eastwick."

"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."

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

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 site of Paul Revere's historic two lantern warning.

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

Over 50 whirling pools left behind from the glacial age.

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

Friction between grains of sand cause a curious "singing" sound.

Museum dedicated to awful artwork.

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

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.