Located in a beautifully restored ice house, this museum is the result of decades of hard work and devotion to the craft of plumbing.

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

Bouncing, delightful, mechanical art at the MIT Museum.

A tiny town in an empty lot was the work of a local eight-year-old.

This unassuming stone commemorates a condiment factory gone up in smoke.

This former Masonic hall has been turned into an art project that uses even more metaphysical iconography.

The monument is inscribed, "To Sagamore John and those Mystic Indians Whose Bones Lie Here”.

This headstone-like marker inscribed with three words has been an utter mystery for over a century.

Dedicated to "the father of U.S. life insurance."

Massachusetts memorial to murder victim Elizabeth Short near the spot where she was born.

The classic Christmas carol was written at this Massachusetts tavern in 1850.

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

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

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

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

A tiny monument to the classic American candy.

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

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

MIT students continue the legacy of beloved professor "Doc" Edgerton through learning by doing.

The strikingly modern structure stands out among the brick buildings speckling the Harvard Business School's campus.

This is the house that spite built.

A small plaque promises cold, hard cash in exchange for work by the famous pop artist.

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

This plaque is dedicated to one-half of the Magliozzi brothers and their hit radio show, 'Car Talk.'