Surrounded by a verdant garden and a backdrop of ivy, a monument to beloved poet Khalil Gibran stands outside of the Lebanese embassy.

Coins and medals straight from the mint await visitors to this shop in the nation's capital.

This statue of one of baseball’s greatest pitchers looks like something out of a sci-fi horror movie.

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

A secret greenspace hides atop a Capitol parking garage.

A promising candidate for the lost rock laid by George Washington was unearthed, but the hunt is still on.

This grisly headstone doesn’t seem to be resting in peace.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

An ear-piercing buzzer calls lawmakers to a vote with a series of long and short rings to form coded messages.

‘Bush the old fire dog died of poison July 5th, 1869. RIP.’

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.

After his presidency, George Washington planned to live only a few blocks from the Capitol building.

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

Every drop of D.C. tap water flows through this old waterworks.

Garments from across the globe call this hidden gem home.

A brass and marble scale model of the solar system embedded in the concrete.

Dedicated to the man who created the first radio wave communication system.

This house was once the location of Frelinghuysen University.

An 18th-century townhouse that once hosted guests of the president.

The hippo that stands on this university campus was once a drunken flea market purchase.

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.

Sip creative cocktails in the former vault of the Riggs Bank.

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.