Cosmeston Park is recreational park catering for many tastes.
Please check out the links for more information.
One of my favourites is the medieval village, and the tours of this are well worth it. You are accompanied by a medieval guide, who acts out the role as if he has no knowledge of the modern world. You can imagine how intrigued the kids are when he asks them how they got here and they have to describe what a car / bus is.