The grounds are part of a Registered Historic Park that includes about 25 acres ( 10 ha ) of early 17th - century formal gardens near the house .
The grounds received a Grade II * listing in 1984 .
The grounds , which received a Grade II * listing in 1984 , are part of a Registered Historic Park that includes about 25 acres ( 10 ha ) of early 17th - century formal gardens near the house .