Sentinel

The Sentinel is the seat of American Wizarding Government. It is a massive complex in rural Maryland, just outside of Washington. The Sentinel is disguised to Deficients as a condemned building. The Senate, the Executive, and the Judiciary are all based here. Floo networks connect the Sentinel to the individual bureaus & agencies, which are scattered around the country and are only accessible via floo from the Sentinel hub. The Shade of the Architect is the ancient ghost of the only man who knows the locations of each of these buildings.