This little barrel-shaped cottage by Lake Superior was once a cartoonist's summer retreat.

Beautiful scenery, history, science, and physics come together in this remnant of shipping lore.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

The park is home to the United States's only still-operating Dutch windmill.

A 60-room castle constructed by a horse-racing heir.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

A single light illuminates one man's overshadowed contributions to street lamp history.

This blue behemoth of a bear is a colorful homage to Brown University's mascot.

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

A monument park dedicated to the influential Beat Generation author and poet, Jack Kerouac.

After the state would not recreate this beloved rock formation, three New Hampshire brothers took things into their own hands.

The only remaining historic maritime signal station in the United States.

New England's "Witches of Eastwick" locations, in all of their quaint white churched glory.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This supermarket is suspended 25 feet above an interstate highway.

Civil War Fort on an island in the Boston Harbor.

The world's largest piece of copyrighted artwork.

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

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

This hotel was the site of major events in sports and radio history. It was also used as a detention center during World War II.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

Dedicated to one of the darkest moments in Irish history.

This statue intended for children to enjoy became a minor political spat.