Festetics Palace is a Baroque palace built on castle ruins in 1745 and expanded 150 years later. It has 100 rooms in two wings, including the renowned Helikon Library. It is located in the charming town of Keszthely on Lake Balaton in Hungary's western Zala Country. For more information, see http://en.wikipedia.org/wiki/Festetics_Palace
I hope to return at some time other than the dead of winter!