A lovely place to visit and go walking. You can drive most of the way up (it's quite steep), park…read more(it's free) and then go off into the forest and end up in the Schloss for a wander round the grounds, and a beer. They have a lovely medieval style restaurant, which is reviewed under a different section.
They hold regular events here; from medieval tournaments to theatre pieces and concerts. Check their website for more details (they have an English version).