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

Historic seaside park featuring explorable, abandoned military structures.

A single room pays homage to the prodigious achievements of the 30th President of the United States.

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 largest collection of historic military firearms in the United States.

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

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

The homestead of American patriot John Adams.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

This railroad tunnel was once the longest in Massachusetts.

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

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

Beautiful steampunk ghosts of early Massachusetts.

A museum dedicated to the quirky and colorful world created by Springfield's favorite son.