Prandegg Castle is an elongated castle on a hilltop adjacent to a collection of rocky cliffs. It lies between two valleys formed by the Waldaist River and the smaller Prandegg stream. The first written mention of the castle occurred in 1287. Prandegg was for centuries intimately connected with Markt Zell (today Bad Zell) and the nearby Zellhof Palace. Since the local boundaries changed in 1784, the castle now belongs to the community of Schönau im Mühlkreis. Prandegg lies in the northern part of this community, between the Aist and the Naarn rivers, which in 853 CE was given by the Margrave William II to the Monastery of St. Emmeram in Regensburg.