I'd seriously consider taking a day trip to Neuschwanstein and Linderhof, two of the castles (well technically Linderhof is a "hunting lodge") of King Ludwig. The trips cost about $60 and are an all day affair in a bus with a guide etc. I would do it on your own if you could but the tour group option is not all that bad. Especially Neuschwanstein is very pretty and a site to see. Total trip time is about 8-9 hours and there are a variety of tour operators that run them.