Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The final resting place of the first documented Chinese person in the United States lies in a Boston cemetery.

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

A men’s restroom became a sandwich shop.

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

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

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

The massive machine creates cracking displays of indoor lightning.

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

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

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

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

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

Memorial to a beloved puppeteer as well as all street performers.

This plaque is dedicated to one-half of the Magliozzi brothers and their hit radio show, 'Car Talk.'

One of the last remaining movie theatres in the country that features a rear-projection system.

This former Masonic hall has been turned into an art project that uses even more metaphysical iconography.

This unassuming stone commemorates a condiment factory gone up in smoke.

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

The headquarters in Salem doubles as an occult art gallery.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

Friction between grains of sand cause a curious "singing" sound.

The world's largest rotating world.