Over November and December 2020, Gwrych Castle in North Wales is to become the most famous castle in the UK. It is in this castle that I'm a Celebrity is being filmed. But there is so much more to Gwrych than simply hosting the 20th series of I'm a Celebrity. The Castle's history is fascinating, with activity on the site stretching as far back as the Iron Age. To learn more about Gwrych's history, Dan met up with Mark Baker, the expert and saviour of Gwrych Castle.