An unassuming secret door once led to a legendary watering hole.

The little-known final resting place of one of America's greatest writers.

This network of narrow, medieval passages has the most delightful name.

The headquarters in Salem doubles as an occult art gallery.

The lecture hall where Alexander Graham Bell first demonstrated the long-distance phone call.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

One man’s hobby is another man’s world of metal wonders.

Rumored to have tormented a family in the late 1960s, this toy now resides in a quiet little oddities shop.

This ruin in a suburban park may be the place where Shakespeare's "A Midsummer Night's Dream" was first performed.

A monument to the Mohawk people stands along an old Native American trade route.

This dam in the woods, built by Henry Ford with only manpower and oxen, holds no water and serves no purpose.

The final resting place of a suffragist author.

A comic book store got the road by its shop officially renamed after Superman's girlfriend.

This wooly sculpture supposedly marks the birthplace of a famous nursery rhyme, or not.

A tiny monument to the classic American candy.

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

A plaque memorializes the Boston location of one of the largest nightclub fires in history.

Sacks of potatoes, made of cast stone, mark where the iconic potato sheds once stood along the river.

One woman’s obsession gave birth to this lovely oddity at the Boston Public Library.

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

The mansion home of author Edith Wharton.

An elaborate, hidden model train in the Needham Town Forest.

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

This railroad tunnel was once the longest in Massachusetts.