Syon House, and its 200-acre (80 hectare) park,
Syon Park, is in west
London, historically within the parish of
Isleworth, in the county of Middlesex. It belongs to the
Duke of Northumberland and is now his family's London residence. The family's traditional central London residence was
Northumberland House. The eclectic interior of the house was designed by the architect
Robert Adam in the 1760s.