Art museum based around the collections accumulated over 58 years by one eccentric thrift store owner.

This North Carolina store preserves a historic moment in America's movement for racial equality.

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

The most decorated dog of World War I is preserved in the Smithsonian.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

Long buried under the 20th-century landscape, this lift lock of the Alexandria Canal is the lone remnant of an ambitious early American transportation project.

This hollow steel globe is the second-largest in the world.

Mysterious 500-year-old tapestries depict a unicorn hunt.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

The rock on which Moll Dyer was found frozen to death is said to still bear her handprint.

The most accurate timepiece in the world.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

The only labyrinth within the city of Alexandria.

A small and somewhat hidden memorial to 68 local veterans of the Vietnam War.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

The world's oldest soul food restaurant is also one of its best.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The fine fabric handwoven at Biltmore Industries was once coveted around the world.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

A museum dedicated to the legacy of Bob Moog and his pioneering synthesizers.