Freedom House — Headquarters: Washington, DC

Note: The provided excerpt from the 'About Us' page contains information about Freedom House's mission, history, founding, and work, but does not explicitly state where the organization's headquarters is located. While the source URL is from freedomhouse.org and the organization is described as 'the leading American organization,' this does not confirm the specific claim that headquarters are in Washington, DC. To verify this claim, one would need a source that explicitly states the headquarters location.