Longwood said the property will not yet be open to the public. The house will likely not become a museum, unlike the nearby Winterthur estate owned by Henry Francis du Pont. Chateau Country ...

Each landmark is within a few miles of one another spanning Chester and Delaware counties in Pennsylvania and New Castle County in northern Delaware.

It is tricky business to put new buildings on an old campus, and the thoughtful architect balances innovation with tradition. But a balancing act need not be a tug-of-war, where a gain on one side ...

From the history of manufacturing gunpowder at Hagley to the renowned horticultural heritage of sites such as Longwood Gardens, Nemours Estate and Winterthur, the du Pont story is part of the ...