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.

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

When it comes to handsignals (and colonialism) rock always beats scissors.

Before Nixon, "watergate" meant canals.

The span is crooked and made from two older recycled bridges.

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

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

Decades before the scandal, this staircase on the river was a literal "water gate."

The most accurate timepiece in the world.

The oldest continuously operating fish market in the United States.

The national park was once a plantation estate.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

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

Largest Roman Catholic church in North America.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

A nostalgic bibliographic gem.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

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

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

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

This grand gothic brewery has been pumping out suds for over a hundred years.

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

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