"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!”

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

Daily lunch spot for many of Washington, D.C.'s cab drivers.

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

100 years later, they're still down there.

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

A historic arena where the Beatles played their first concert in the U.S.

Art deco landmark on the outskirts of Washington, D.C.

A much-maligned monument to teetotalism.

The discovery site of the "Capitalsaurus," the official dinosaur of Washington, D.C.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

Senators used to relax in the nearly forgotten marble tubs now hidden in the U.S. Capitol Building's basement.

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

A fantastic array of trays and cables once whisked books over to the Capitol at 600 feet per minute.

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

This poor little statue is the most vandalized memorial in Washington.

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

The institution is sitting on a goldmine of 21,000 paints, varnishes, pigments, and primers preserved for posterity.

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

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

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

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

Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.