Millions of numbers carved in glass represent the tattoos forced upon victims.

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

A school used as a model for public education across the country.

This hidden labyrinth offers walkers some brief peace of mind.

The world's largest piece of copyrighted artwork.

Memorial to a beloved puppeteer as well as all street performers.

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

One man's psychedelic fence is painted with his cacophonous folk art musings on the world.

Tragedy on Little Brewster Island memorialized.

A tiny monument to the classic American candy.

A unique columnar residence built in the 19th century.

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

Sacks of potatoes, made of cast stone, mark where the iconic potato sheds once stood along the river.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

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

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

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

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

This giant Boston statue of Mary is standing on a globe to show her power over the universe.

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

This is the house that spite built.

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