Free parking for the castle. At least when we went there. Castle over charged and they covered the whole parking area with a fence so you can not even take one picture of the castle without the fence in the way. In my opinion done on purpose so you have to enter the ruins (17£!) and not even the lady at the reception was able to tell us what’s so special about those ruins. So for me an absolute tourist trap… didn’t enter. Oh and with big RVs there’s no space so we had to park side ways on 3 parking spots. Not sure if that’s allowed but we only stayed for 5 minutes anyways.