There’s a hidden military meme engraved on the World War II Memorial.

Engraved in stone here are the signatures of everyone who signed the Declaration of Independence.

Perhaps the most scandalous statue of America's first president.

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

A neglected and disused parking garage ramp has become home street artists to share their art.

The nation's second-ever First Lady urged the founding fathers to "remember the ladies."

This small shop walked so America could run on Dunkin'.

The world's largest piece of copyrighted artwork.

The world's smallest drawbridge.

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.

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

The homestead of American patriot John Adams.

Utopia and nostalgia mingle at the site of Bronson Alcott's ill-fated agrarian commune.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

A museum dedicated to exhibiting remarkable outsider art.

These structures serve as a memorial to one of Boston’s most ambitious and controversial urban redevelopment projects.

An inclusive, climate-resilient playground honors the life of a young Boston Marathon bombing victim.

A pair of antique trolleys are on display at one of the oldest subway stations in the United States.

This steep slide at a kids’ playground went viral after an police officer tumbled down it.

This mosaic commemorates the oldest subway tunnel and station in the United States.

One of the largest public collection of historic armored and military vehicles in North America.

The Inuit kayak from Robert Peary's 1896 expedition to Greenland is now on display at a local library.

This groundbreaking 16th-century map is known as "America's birth certificate."

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