Plans for this peninsula included houses, the United Nations Headquarters, and a nuclear power plant. When none of them worked out, it became an expansive park.

The world's largest piece of copyrighted artwork.

The ruins of one of the first railroads in the U.S. lie hidden within a neighborhood cul-de-sac.

This site commemorates the former inn and restaurant where the chocolate chip cookie was first crafted.

The sprawling, eccentric estate of Ames and Ames, a brilliant botanist, and a genius inventor and artist.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

A New England ghost town features a trail of boulders etched with intriguing life lessons.

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

What may be Boston's finest Art Deco building, located in the city's Financial District.

This beautiful architectural gem was the first waste treatment facility in Boston.

A pair of 7-foot legs belonging to the military man of the Mayflower stand jauntily by the side of the road.

The only surviving building of historic West Boylston, which was flooded to create the Wachusett Reservoir.

This railroad tunnel was once the longest in Massachusetts.

Once the largest gravity dam in the world.

A 70-foot-deep ice cave formed by lava from Mt. Fuji on the edge of Japan's "Suicide Forest." 

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

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

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

A beautiful Victorian-era cemetery, complete with a miniature village.