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

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

The narrowest house in America is seven feet of pure spite.

Look closely and you’ll notice that the color changes a third of the way up the tower.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

This church built atop a gas station promises to "equip you for the next stage in your life’s journey."

At 207 feet, one of the world's longest continuous escalators.

Parking garage where Bob Woodward met Watergate source "Deep Throat."

The tunnel under the Capitol Building where Congress takes out its trash.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Washington's iconic carousel has a nice piece of Civil Rights history.

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

The highest point in Alabama was almost completely deforested, but is now home to protected towers and trees.

The record holder for the world’s largest peach.

The highest point in South Carolina was once owned by an energy company that neglected it but now the state is taking it back.

The site of the climactic scene from the classic horror film is now a historic landmark.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

Golden plates containing what would become the Book of Mormon were believed to be buried on this New York hillside.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

Elevated freight railway turned wildly successful urban park.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.