Solar powered Spectacle Island features all-green facilities.

Hill-like structures formed by glaciers and sandy spits of land.

Trash escaped from a landfill to fill beaches with all kinds of treasure.

Civil War Fort on an island in the Boston Harbor.

Civil War-era Fort designed to withstand invasion and attack, with tricky traps called "murder holes."

This tower commemorates the spot where George Washington hoisted the Grand Union flag.

A home decorated by its owner with eye-catching and captivating assemblages of found objects

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

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

A real plaque marks the spot where a Faulknerian character committed fictional suicide.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

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

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

Plymouth's huge yet little-known memorial to the Pilgrims.

Hundreds of personalized inscribed planks make up this historic boardwalk.

This abandoned radar station from the Cold War era now only broadcasts a seriously ominous air of isolation.

This stimulating sex toy museum is sure to arouse the interest of its visitors.

Mural fragments and various sculptures honor the longtime artist.

This impressive Boston holy house is the American mecca for Christian scientists.

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

One of the few remaining monuments dedicated to South Boston's Irish heritage.

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

The oldest surviving wood-frame building in North America is still in the family.

This art display in Dedham honors a local fish, and is dedicated to the volunteers who restored the canal.