A beautiful Victorian-era cemetery, complete with a miniature village.

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

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

The bears may be gone, but their old cages can still be found.

One of the few remaining monuments dedicated to South Boston's Irish heritage.

A unique columnar residence built in the 19th century.

This hidden labyrinth offers walkers some brief peace of mind.

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

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

This massive World War II calculator hearkens back to the days when "computer" was a job title.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

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

One of the last remaining movie theatres in the country that features a rear-projection system.

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

A real plaque marks the spot where a Faulknerian character committed fictional suicide.

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

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

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

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

A tiny monument to the classic American candy.

Bouncing, delightful, mechanical art at the MIT Museum.

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

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

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