The national park was once a plantation estate.

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

The only Leonardo Da Vinci painting in the Western Hemisphere.

A striking memorial to the 21 lives lost in an explosion at the Washington Arsenal

The legacy of a wealthy executive and his wife, this little-known art museum features works by Picasso, Monet, Renoir, Cezanne, and more.

The National Park Service’s best-kept secret with views that rival any in D.C.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

This unassuming passageway played a key role in one of the most important events in U.S. history.

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

A much-maligned monument to teetotalism.

Go take a picture with the inventor of the daguerreotype photographic process.

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

This poor little statue is the most vandalized memorial in Washington.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

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

The privately owned cemetery that holds room for Washington's finest when they step down from life.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The most accurate timepiece in the world.

A haunting tribute to pioneering photographer Clover Adams.

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

The house where John Wilkes Booth conspired with his co-conspirators.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.