The massive machine creates cracking displays of indoor lightning.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

Shelves covered in dozens of coffee bean varieties fill this North End institution.

This ambitious father and son team reigned supreme over the North End, and witches, for many years.

From bench to vandalism to art, this silly prank seat was funny enough to become permanent.

Painstakingly built dioramas sit unnoticed in a Boston office building.

Ice cream stand, snack bar, and time capsule of milk conveyance.

"Mock all and sundry things, but leave the saints alone."

This landmark cemetery in Boston was created more than 300 years ago.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Narrowest house in Boston.

Site of a famous 19th-century transcendentalist utopian community, now abandoned.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

Radical Bookstore and Community Space.

Dim sum, served in a grand old theater.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

A lush indoor jungle fills this bustling Madrid transportation hub.

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

The mystery of this small, brick pond eluded its possibly only investigator until his death.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

This enchanting hill is home to fairy lore and a sinister local mystery.

This mundane post marks the old location of the city's main postal hub.