Statue commemorating the use of ether in anesthesia.

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

This rare symbol of Eastern philosophy in the West has been created over years of painstaking construction by the local community.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

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

The pleasant woodland cemetery that has inspired more than its fair share of wild legends.

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

The remnants of a Gilded Age elegance preserved in the middle of a stark modern tower.

Hut with supplies for shipwreck survivors.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

Grave of the man allegedly responsible for a series of infamous murders in Boston in the 1960s.

The first bell ever cast in Boston was cast by Paul Revere...and sounded terrible.

A mysterious stone embedded at the base of a historic Boston building.

According to legend, Bob Dylan sneaks in twice a year to eat dinner with Jack.

For 20 years, this whale skeleton has been slowly dripping oil on the floor of the museum where it hangs.

This railroad tunnel was once the longest in Massachusetts.

The sprawling, eccentric estate of Ames and Ames, a brilliant botanist, and a genius inventor and artist.

A coastal rock outcrop with mysterious inscriptions variously attributed to Native Americans, Portuguese, Phoenicians, Norse, and more.

A spooky and decrepit mental health facility is slowly being replaced with newer digs.

The site of the first "historically true" UFO encounter in the U.S.

Overgrown ruins of a turn of the century island fort that sees very few visitors.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.