This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

Dispersed across 45-acres, 39 structures house a massive collection celebrating American Folk Art.

A giant toy jack made of numerous welded-together fire hydrants.

Abandoned Italianate architecture on the coast of Maine.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

Despite its extensive history, this fort saw little to no combat.

A historic custom house with ties to George Washington is now a shrine to local nautical history.

It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

No one really knows how these old hobby horses got here, but the herd keeps growing.

The largest collection of historic military firearms in the United States.

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.

A former zoo turned public park, where visitors can hang out in the old animal cages.

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

Books you don’t need in a place you can’t find.

This rare symbol of Eastern philosophy in the West has been created over years of painstaking construction by the local community.

The site of the first "historically true" UFO encounter in the U.S.

Eight whimsical acres of metal art.

You can get anything you want at the former site of the restaurant immortalized by Arlo Guthrie.

Wander the sprawling living museum on the site of one of a 16th-century community.

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

A war memorial that appears to ascend from its forested setting.

A monument to the Mohawk people stands along an old Native American trade route.

Locals say Williams' ghost still haunts the place where she was murdered.