The 28,000-year-old specimen is remarkably intact.

The U.S. Navy’s preposterously detailed mini battleship took 77,000 hours to complete.

The elevator that makes it possible to fly American flags in bulk over the U.S. Capitol

Part of a WWII submarine is lurking outside the Washington Navy Yard parking lot.

This restaurant has been a haven for D.C.'s LGBTQ community since the 1950s.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

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

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

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

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

The most accurate timepiece in the world.

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.

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

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

An Industrial Revolution-era public work that purified water using nothing but sand.

A Spiritualist house of worship where believers communicate with the dead in the spirit world.

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

A state park that once served as an important river crossing, and now offers protected lands for endangered plants and animals.

FDR's Art Deco hospital tower was hopelessly inefficient.

The U.S. government built the million-pound stack of steel during the Space Race.

Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

The Forest Service's surprisingly sophisticated collection of wildfire prevention art features America's most beloved bear.