Chateau CountryExplore 33 du Pont estate homes in the Brandywine Valley region that spans Pennsylvania and Delaware Originally from France, the du Pont family settled in the Brandywine River Valley and became one of the richest and most influential families in the United States. Chateau Country is an intimate portrait of the houses built by this Delaware dynasty. Their first dwelling was a modest six room house just steps from the gunpowder mills that made the du