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

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

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.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

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

This is the house that spite built.

Bouncing, delightful, mechanical art at the MIT Museum.

A Harvard-area eatery preserves the uncovered tiles of its century-old predecessor.

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

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

Trash escaped from a landfill to fill beaches with all kinds of treasure.

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

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

Hill-like structures formed by glaciers and sandy spits of land.

Statue commemorating the use of ether in anesthesia.

This historic Boston building has gone from personal estate to porn theater and back again.

Dim sum, served in a grand old theater.

Solar powered Spectacle Island features all-green facilities.

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

A men’s restroom became a sandwich shop.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

A unique columnar residence built in the 19th century.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.