castle hotels enroute from frankfurt to prague

OK, just go to this sight for a list of all the castle hotels in Germany (or anywhere else for that matter).
http://www.castleandpalacehotels.com/countries/germany/germany_home/castle_hotels_germany.html

Thanks - I couldn't figure out which ones were entourage to Prague. Do you know by chance?

Frankfurt is in Hesse. Baveria is the most direct way to Prague, but you could also go via Thuringia and Saxony.