One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

One of Europe's oldest libraries.

The largest known medieval map of the world.

Rare collection of medieval books under lock and key.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

A centuries-old church stands as a testament to Boston's "father of architecture."

Stolen goods adorn the organ at Old North Church.

The world's largest piece of copyrighted artwork.

Historic Hull Street was actually the first street with a proper name in the Boston area.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The site of Paul Revere's historic two lantern warning.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

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

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

Two thousand artifacts from around the world collected by one woman who loved to travel.

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

This is the house that spite built.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

An eccentric inventor's castle home with its own indoor weather system.

Books you don’t need in a place you can’t find.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

The homestead of American patriot John Adams.