This sculpture is dedicated to a local therapy dog who later became the official mascot of the 126th Boston Marathon.

A monument to the winner of the 1946 Boston Marathon, Greek runner Stylianos Kyriakides.

This pavement line and accompanying statue commemorates the starting point for the world's oldest annual marathon.

A small obelisk commemorates the launch site of the world's first liquid-fueled rocket.

Solitary stone structures and a tale of tragedy are all that remains of a historic settlement built by French Protestant refugees.

It's not a typo, now say it five times fast!

A posh members-only club with a literally dramatic history.

A museum dedicated to the Georgia Peach, one of the greatest baseball players of all time.

Intricate storybook scenes are tucked inside these shadow boxes, which are tucked inside a library in the Pocono Mountains.

A unique sculpture designed to raise stroke awareness.

This supermarket is suspended 25 feet above an interstate highway.

Eliot was the first missionary to produce religious text for Algonquians in their own language.

These impressively detailed battle scenes depict the violence and tragedy of war in miniature.

A historic bridge with a lovely acoustic anomaly.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

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.

Dedicated to the neverending mathematical constant, this plaque next to a park bench was sponsored by an anonymous benefactor.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

This plaque commemorates the call between Alexander Graham Bell and Thomas A. Watson.

A tiny monument to the classic American candy.

Whimsical cookie-themed plaques mark the birthplace of the Fig Newton.

One man's psychedelic fence is painted with his cacophonous folk art musings on the world.

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