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

Statue commemorating the use of ether in anesthesia.

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

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

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

Radical Bookstore and Community Space.

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

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

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

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

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

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

This Dutch-styled residential building was originally a cocoa company's World's Fair showpiece.

This is the house that spite built.

These impressively detailed battle scenes depict the violence and tragedy of war in miniature.

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

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

Beautiful steampunk ghosts of early Massachusetts.

The self-proclaimed world's smallest museum, located next to a Massachusetts sandwich chain.

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

The macabre paintings created by famous suicide proponent Jack Kevorkian, or "Dr. Death."

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

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

The former locus of Boston's high culture has been shuttered and buried for over 70 years.