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

A brass plaque dedicated to a convicted cannibal hangs in the National Press Club, and that's not even the craziest part of the story.

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

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

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

There just so happens to be a court even higher than the U.S Supreme Court: a basketball court in the building itself.

It was once the base for a series of domestic terror attacks.

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

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

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

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

"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!”

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

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

The oldest continuously operating fish market in the United States.

An extensive, if one-sided, history of U.S. law enforcement's war on drugs.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

A former major munitions plant that has been converted into a sprawling art space.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.