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

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

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

This hidden labyrinth offers walkers some brief peace of mind.

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

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

"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."

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

This tiny, painted door at the base of a tree stump has been a fixture of the Harvard University campus for decades.

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

The massive machine creates cracking displays of indoor lightning.

Three prestigious academic collections come together to create a world-class natural history museum.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

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

This miniature feudal castle was built on a whim to honor a US Navy pioneer.

Once a private collection, now the only museum of arms and armor in the Western Hemisphere - CLOSED.

A small, red building located along a state highway where the 18th Vice President made shoes in his youth.

A monument to the winner of the 1946 Boston Marathon, Greek runner Stylianos Kyriakides.

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

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

This mysterious artificial cave has long puzzled New Englanders.

This stone tower in a small town's graveyard looks as though it would be more at home in a fairy tale.

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