Herstmonceux castle

My 2 children (6 and 7 - boy and girl) spent 6 hours (!!) at the science centre on site - and could easily have stayed longer. The staff put on the most excellent, interactive talks that put the science museum in London to shame. The best money we spent during the entire summer holidays. The site is quite enclosed so my two were able to wander independently between areas and exhibitions. Highly recommended.