Schloss Seggau is located on a wooded hill overlooking the town of Leibnitz. The area around Schloss Seggau has been settled since at least the Roman era, as demonstrated by the impressive lapidarium which has survived from that period. The upper castle was built by the Archbishopric of Salzburg in the twelfth century as a base for missions and supervision and this original structure was expanded in 1218 by the bishops of Seckau. Over time, a total of three castles were built: Burg Leibnitz (belonging to the Archbishopric of Salzburg), the castle of the bishops of Seckau, and Schloss Polheim. The castles were completed in their present form under Bishop Johann Ernst, Count of Thun, in the latter half of the seventeenth century. Schloss Seggau was the residence of the bishops until 1786, after which it remained their summer residence until into the twentieth century.
Schloss Seggau now serves as a site for seminars and conferences with a hotel and a Schloss Cafe. The wine cellar is over three hundred years old and offers the opportunity for wine tastings and sales.
References:Krickenbeck moated castle is one of the oldest on the lower Rhine. Its history dates back to the year 1104, when the castle was first mentioned. It is unclear why the old castle, which was certainly inhabited by Count Reginar, was abandoned or destroyed. In the mid-13th century the castle was moved to the current location. At the end of the 14th century the new castle belonged to the Counts of Kleve.
Johann Friedrich II of Schesaberg converted the castle into a Baroque mansion between 1708-1721. On September 7, 1902, a fire destroyed the entire mansion. From 1903 to 1904, a three-winged castle was built in the Neo-Renaissance style. Today Krickenbeck is a conference center.