The Château d'Orcher is a castle in the commune of Gonfreville-l'Orcher in the Seine-Maritime département of France.
Built to protect the mouth of the River Seine, it includes an imposing square crenellated tower. In the 18th century it was transformed into a residence.
History
The castle grounds are open to the public all year. The Château d'Orcher is listed as a monument historique by the French Ministry of Culture.