A unique columnar residence built in the 19th century.

This tower commemorates the spot where George Washington hoisted the Grand Union flag.

Whimsical cookie-themed plaques mark the birthplace of the Fig Newton.

A tiny monument to the classic American candy.

This Massachusetts home was the first to have a telephone line and its own phone number: 1.

This plaque commemorates the call between Alexander Graham Bell and Thomas A. Watson.

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

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

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

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

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.

An anonymous art project beneath Longfellow Bridge where hundreds of trophies line the steel support beams.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Around 160 years ago, this spot marked the location of a wharf along the shores of the Charles River.

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

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

The Boston square dedicated to the dark poet who was born nearby.

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

At the supposed instruction of Ben Franklin and Socrates, a Spiritualist believer intended to birth a mechanical messiah here.

A historic bridge with a lovely acoustic anomaly.

The childhood home of the meat inspector who would become the face of America.

This New England drive-in was built to straddle the border between two states.

A 12,000-year-old bog boasting rare plants and fauna.

A New Hampshire grave with a grudge.