This miniature feudal castle was built on a whim to honor a US Navy pioneer.

A stone marker dedicated to a Black veteran of the American Revolution who refused to leave his land near Walden Pond.

This penny stopped a bullet and saved a soldier’s life during the American Civil War.

The Inuit kayak from Robert Peary's 1896 expedition to Greenland is now on display at a local library.

Harry Houdini plunged into the Charles River and performed one of his escape acts here in 1908.

The first woman in the United States to get a driver's license is buried here.

Created by a local artist, these quirky sculptures each have their own names and personalities.

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

This Tudor-style mansion is home to the first roadside confectioner in the United States.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

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

A gift to the children of Boston, this bronze bear represents playfulness, a spirit of love, and the warmth of big hugs.

A stone marker commemorating the first time sound was transmitted over wires.

Historic home of a Black veteran of the American Revolution and one of the earliest civil rights activists in the United States.

Dedicated to a colonial woman who was hanged for being a Quaker.

A men’s restroom became a sandwich shop.

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.

The former locus of Boston's high culture has been shuttered and buried for over 70 years.

Statue commemorating the use of ether in anesthesia.

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

This statue intended for children to enjoy became a minor political spat.

Dedicated to one of the darkest moments in Irish history.