Statue commemorating the use of ether in anesthesia.

The Boston square dedicated to the dark poet who was born nearby.

The former site of an all-but-forgotten colonial landmark is now remembered by an often overlooked bas relief.

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

Two thousand artifacts from around the world collected by one woman who loved to travel.

An enormous, inside-out glass globe built in 1935.

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

This nearly endless university hallway is home to a unique sunset known as "MIThenge."

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This historic mini-suspension bridge was swept away once but is now here to stay.

The Connecticut village named for its subterranean thunder.

The largest body of water in Massachusetts annihilated four small towns just to slake Boston's thirst.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

Bouncing, delightful, mechanical art at the MIT Museum.

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

An eccentric inventor's castle home with its own indoor weather system.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

An elaborate, hidden model train in the Needham Town Forest.

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

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

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

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

This is the house that spite built.

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