The Old Warden estate has a number of attractions including the Shuttleworth Collection of old aircraft and cars, and the Swiss Garden. Also on the estate are the Mansion, and Queen Anne’s Summerhouse. I visited on a Heritage Open Day when the Mansion, Swiss garden and Summerhouse were opened free of charge.
The Mansion is occasionally opened to the public and the Summerhouse is normally let out by the Landmark Trust.
The Shuttleworth Collection is open daily and well worth a visit if you are interested in old aircraft, cars etc. The Swiss Garden is also open daily (charges apply).