Washington, D.C. is a capital city of United States.
Washington, D.C. is where Benjamin Franklin Gates, Riley Poole, and Abigail Chase live.
Washington, D.C. is also a setting where several National Treasure events take place:
- White House, with the Resolute Desk in Oval Office.
- National Archives where the Declaration of Independence is held.
- Library of Congress hiding place of the Book of Secrets.
- Watergate Complex plotted the steal the Declaration of Independence there.
- Ford's Theatre where Abraham Lincoln was assassinated.
- Harbach Tavern where Thomas Gates was killed.
- Department of Homeland Security is located in D.C.
- Borders Books and Music, a book store where Riley Poole tries to sign his books.