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

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

Also known as the Founding Church of Scientology.

A line of blue paint marks the route of the inaugural parade.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

An overlooked memorial honoring the local Washington residents who died in World War I.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

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

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

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

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

A building shaped like the Army Corps of Engineers logo, because why not?

Before Nixon, "watergate" meant canals.

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

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

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

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

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

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

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

The "lovely red Vega" of the legendary record-settling pilot.