Commemorating the 1948 creation of the Jimmy Fund, a Boston-based cancer charity.

Stolen goods adorn the organ at Old North Church.

One of the indelible moments of the American Revolution took place at this location.

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

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

The former locus of Boston's high culture has been shuttered and buried for over 70 years.

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

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

One of the now-less-hidden floral gems of the "Emerald Necklace."

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

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

A museum to a cave explorer whose tragic death was a media sensation, and whose corpse became a tourist attraction.

A giant open-air sculpture made of over 200 full-sized boats.

This landmark jazz venue is the oldest continuously running African-American club in the United States.

Old car parts and assorted materials get turned into one man's mechanical treasures on the side streets of Cleveland.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

The angel of death appears to weep black tears at this grave marker.

Known locally as "the giant head," this 14-foot LED sculpture has a photo booth in the neck where you can have a 3D picture taken and displayed.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

A wonderful and easily overlooked museum tucked in Ohio's Burke Lakefront Airport.

This Czar-funded, onion-domed, lavishly muraled Orthodox Church played a starring role in "The Deer Hunter."

This abandoned school has had many lives since the early 1900s, and all of them doomed.

Undone by Prohibition, this abandoned brewery-turned-flour mill is now ready for its third act.