Crossing Chester County, the narrow Brandywine River leaves in its wake such a charming valley, Brandywine Valley, that its landscapes have been immortalised by artists, while wealthy industrialists built elegant houses there. The Winterthur Museum and Country Estate (in Winterthur), an exceptional museum of decorative arts and erstwhile fabulous home of the collector Du Pont de Nemours, and the spectacular Longwood Gardens are a reflection of their immense prosperity.