Italy
In Sandridge/Wheathamstead. Waterend, originally part of the Manor in Sandridge, was in Ayot St Peter, now in Wheathampstead. For more info/photos/refs see "reference" for "National Heritage List for England". Former home of Waterend Barn.
Listen to the audio guide for Waterend House Free on WIP — starts by itself when you arrive, even with the screen off