Real estate experts have estimated Granogue, widely considered the symbol of Delaware’s Chateau Country, is worth at least $50 million, likely more. Why did Longwood Gardens purchase Granogue?

The 505-acre estate and long-time residence of the late Mrs. Barbara and Mr. Irénée du Pont, Jr. located in New Castle County in northern Delaware. (PHOTO LONGWOOD GARDENS) By For MediaNews Group ...

The internationally known botanical garden and the Conservation Fun have entered into an agreement with Granogue Reserve LTD LLC to acquire the estate of Irénée du Pont, who died on Jan. 16.

Longwood Gardens’ Main Fountain Garden. The Philadelphia institution, built on land once owned by Pierre S. du Pont, has just acquired Granogue, a du Pont family estate in New Castle County ...