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

There's an old indoor swimming pool hidden directly underneath the White House Press Briefing Room.

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

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

The first presidential bomb shelter was located in an old vault under the Treasury, connected to the White House via tunnel.

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

Where the U.S. government kept its actual treasure, before Fort Knox.

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.

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.

The local community brought back this land to transform it into a nature preserve.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

A historic ruin just 20 feet away from a busy highway onramp.

Once home to the largest photo service in the United States.

Before founding the American Red Cross, Clara Barton had a tremendous humanitarian impact by locating thousands of missing soldiers.

A small token of gratitude from freezing cold journalists who were given a warm haven while covering JFK's inauguration.

D.C. once had its own tiny rival to the New York Stock Exchange.

A replica of the famous memorial statue at the Normandy American Cemetery hides in an office building in downtown D.C.

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

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

Over the last century, this elegant columned facade has been home to the headquarters of a bank, several nightclubs, and a restaurant.

This Masonic lodge was the first major private building to be constructed in Washington, D.C. after the Civil War.

An overlooked tribute to one of the most important peace deals in American history.