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

This massive boulder is inscribed with the story of a sensational hostage negotiation dating back to Colonial times.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

The oldest surviving wood-frame building in North America is still in the family.

This is the house that spite built.

Funded entirely by volunteers and donors this military memorial features a tank with a comedy line on its barrel.

This supermarket is suspended 25 feet above an interstate highway.

A historic bridge with a lovely acoustic anomaly.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

"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."

One of the oldest baseball fields in continuous use has been hosting games since 1878.

This old mill and former police station now present a world-class collection of Orthodox iconography.

This railroad tunnel was once the longest in Massachusetts.

No one really knows how these old hobby horses got here, but the herd keeps growing.

One of the largest public collection of historic armored and military vehicles in North America.

America's "second most important bell" is a contentious spoil of the Civil War.

Panoramic views of the city of New Haven and the Long Island Sound, with a side of history.

A reliquary of pop culture marvels, including the world's largest (and most terrifying) Jack-in-the-Box.

The "possessed" house that inspired "The Haunting in Connecticut" book and movie.

This "thrice-cursed" island is allegedly home to Captain Kidd's lost treasure.

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

This abandoned psychiatric hospital once housed more than 4,000 patients in the middle of a quaint New England town.

The most photographed house in Maine looks good enough to eat.