For 20 years, this whale skeleton has been slowly dripping oil on the floor of the museum where it hangs.

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

No one messes with the Massachusetts sacred cod, not this time...

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

One of America's most historic homes also holds a startling literary legacy.

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

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

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

Painstakingly built dioramas sit unnoticed in a Boston office building.

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

A men’s restroom became a sandwich shop.

The sprawling, eccentric estate of Ames and Ames, a brilliant botanist, and a genius inventor and artist.

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

A coastal rock outcrop with mysterious inscriptions variously attributed to Native Americans, Portuguese, Phoenicians, Norse, and more.

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.

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

An 80-year-old house built out of newspapers.

"Mock all and sundry things, but leave the saints alone."

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

This is the house that spite built.

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

The macabre graffiti spectacle in a quarry in a Massachusetts forest reservation.

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