The largest body of water in Massachusetts annihilated four small towns just to slake Boston's thirst.

The world's oldest known salt mine.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

"Try not to knock anything over!"

A Bed-Stuy gymnasium that hosts expansive raves, performances, dance parties, and more.

A collection of full-size movie monsters opened to the public.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

The only structure left with direct ties to the Salem witchcraft trials of 1692.

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

Former abode of notable poet, complete with literary references and stories of ghosts.

Holding the most bodies of any cemetery in the United States.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

Baroque celebration of the end of the Great Plague of Vienna.