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.

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

Ice cream stand, snack bar, and time capsule of milk conveyance.

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

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."

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

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

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

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

A New England ghost town features a trail of boulders etched with intriguing life lessons.

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

One of the now-less-hidden floral gems of the "Emerald Necklace."

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

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

Two thousand artifacts from around the world collected by one woman who loved to travel.

A beautiful Victorian-era cemetery, complete with a miniature village.

An enormous, inside-out glass globe built in 1935.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Even Henry David Thoreau found this glacial pothole irresistible.

Celebrating the greatest pugilists the world has ever known.

Surprisingly aquamarine waters fill deep lakes formed at the end of the last ice age.

A gigantic 10-foot tall stone man.