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

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

This is the house that spite built.

One of America's most historic homes also holds a startling literary legacy.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

Rising 30 feet in the air atop Quarry Hill, the Old Powder House is the oldest stone building in the state of Massachusetts.

This tiny, painted door at the base of a tree stump has been a fixture of the Harvard University campus for decades.

Impossibly life-like natural history models created out of glass by a father and son.

Three prestigious academic collections come together to create a world-class natural history museum.

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

The remains of the furnace and iron works that produced the massive Hudson River Chain still stand in the woods of New York.

Local lore claims this park is named after a young woman who jumped off a cliff.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.

A historic grist mill and active sluice on the Black River.

A world-class collection of mechanical musical instruments and automata.

Historic town settled in the 19th century because of its convenient location along a popular coal transport route.

This massive boulder is either a unique rock formation created by glacial melt or a magic energy vortex.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

Practice your Dirty Dancing lifts in the manmade lake where Johnny Castle himself did.

A historic covered bridge, only one of two remaining in North Carolina.

Formerly the most gerrymandered district in the U.S., it twisted and turned along racial borders.