The rogue roots are gradually consuming some of the historic marble grave markers.

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

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

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

A celebrity from the late Cretaceous period.

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

A super-sized promotional trick that is now a D.C. landmark.

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

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

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

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 historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

A nostalgic bibliographic gem.

A historic neighborhood church is reborn as a psychedelic arts collective.

The United States Capitol's former columns still stand.

This statue commemorates the meeting of the most influential minds of the women’s rights movement.

Toxic waste disaster that founded the Superfund program.

This lovely little pond is named after the hundreds of soldiers' corpses that were rolled into the waters during the French-Indian War.

A mysterious echo seems to defy the laws of acoustics.

An upstate New York garage advertises its services by literally putting the automobile above all else.

Alexander Milliner, a favorite of General Washington, is interred at Mt. Hope Cemetery along with 80 other Revolutionary War veterans.

"Call for the doctor, call for the nurse... Vote!! said the lady with the alligator purse."