First Sunday of the month
Kett’s Heights is one of Norwich’s best-kept secrets. It is steeply wooded and contains the remains of a medieval chapel, 19th century garden terraces and one of the three strategic viewpoints overlooking Norwich
It's a FREE tour so just turn up at the entrance gates at 2.30 to be guided around and learn a lot about the place and it's history.
http://www.kettsheights.co.uk/location.html