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

Final resting place of the author who wrote the ghost story "The Turn of the Screw," and his brother, the Harvard doctor and paranormal investigator.

Painstakingly built dioramas sit unnoticed in a Boston office building.

America's original house of worship for Spiritualism, the religious movement based on communing with the dead.

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

Statue commemorating the use of ether in anesthesia.

Museum dedicated to awful artwork.

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

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

Bouncing, delightful, mechanical art at the MIT Museum.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

This supermarket is suspended 25 feet above an interstate highway.

A historic bridge with a lovely acoustic anomaly.

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

A building so large that it has its own weather.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

A crumbling hospital from the 1850s on Roosevelt Island.

One of only two commuter aerial tramways in the United States.

A giant scale model giving a sneak peek at what urban planners see for Shanghai by 2020.

The hallucinogenic center of the ancient world.