One of two lighted lanterns hung in the church belfry on the eve of the Revolutionary War to warn that the British were on their way.

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

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

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

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

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

This turn of the century masterpiece has a mysterious goaty interloper.

Golden Gate Park's historic collection of plants.

Quite simply the largest tree in the world (by volume).

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

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

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

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.

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

The site of Paul Revere's historic two lantern warning.

The oldest working bell set in North America, the bells at Old North Church sat silent for their first four years in Massachusetts.

Tragedy on Little Brewster Island memorialized.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

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