The fifth-longest natural arch in the world, and the longest outside China.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

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

Experience the hysteria of a 17th century witch hunt through goofy reenactments and wax dummies that should probably be burned at the stake.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

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

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

The former site of an all-but-forgotten colonial landmark is now remembered by an often overlooked bas relief.

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

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

Statue commemorating the use of ether in anesthesia.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

Medieval torture techniques with a modern conscience.

The once-abandoned 140-year-old hotel used in the movie "In Dreams."

The grave of Mary Nasson is shrouded by witchy legends.

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

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

Located in Faneuil Hall, the headquarters of the Ancient and Honorable Artillery Company of Massachusetts has stood the test of time.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

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

This area was once known for being a lawless haven for rough-and-tumble sailors, earning the maritime-themed nickname "the black sea."