The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

This natural rock "church" might not be a proper chapel but that doesn't mean it's not beautiful.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

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

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

This exhibit is devoted to the games and wonder that Hasbro has brought children worldwide.

The first keystone arch railroad bridges constructed in America.

Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

A former copper mine which became a truly unsuccessful prison.

The world's longest known cave system.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

The site of Paul Revere's historic two lantern warning.

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

All that remains of the Whittall mansion are the ruins of the formal garden and its pergola, dedicated to the late Matthew J. Whittall by his widow.

This stone tower in a small town's graveyard looks as though it would be more at home in a fairy tale.

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

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

This supermarket is suspended 25 feet above an interstate highway.

Interactive museum complete with costumed re-enactors and the only known surviving chest from the Boston Tea Party.

Each August, one of the largest religious (and food) celebrations in the country is held in Boston.

Impossibly life-like natural history models created out of glass by a father and son.

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