Bank House at Middle Drove, Marshland St James (pictured) will be open on Sunday from 10am to 4pm as part of National Garden Scheme.
The two-acre garden includes a new pond, mixed borders, patios, terraces, secret spaces and horticultural areas.
Admission will cost £3.50 for adults and is free for children. There will be home-made teas and plants for sale.
Dogs on leads are welcome. Money raised will go to charities supported by the scheme.