Government in Washington, D.C.

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

This apartment building designed by a notable Washington D.C. architect housed the Qing Dynasty's Legation.

Amid the sprawling Defense Intelligence Agency Headquarters is one of Washington's least accessible museums.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

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.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

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

A clone of a cloned tree that was so important it allegedly had its own guards.

The fountains of the U.S. Navy Memorial are annually salted with water from the Seven Seas as part of a nautical ritual.

An 18-mile-long tunnel for sewage waste will soon wind within the bowels of Washington, D.C.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

Corn-inthian columns with a uniquely American take on neoclassical architecture.

Was there a small "backpack nuke" hidden in the attic? JFK apparently thought so.

Perhaps the most scandalous statue of America's first president.

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

These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.