The remains of the Castle can be visited
Haibach Castle (Ruin)

On the Hofberg in the Bavarian municipality of Haibach in the district of Straubing-Bogen is the Haibach Ruin, a hilltop castle. It was the ancestral seat of the knightly family of Haybecken.
History+
The origins of Haibach Castle date back to the 12th century, when the Haybecken family, ministerials of the Counts of Bogen, had their seat here. The first documented mentions appear around 1100. Members of the family, such as Albert von Haybach, who participated in a crusade, and Dietrich Ritter zu Haybach, who served as a judge and administrator, played roles. In 1348, Dietrich's sons Albrecht, Dietrich, and Hanns acquired the Hofmark of Wiesenfelden. The knightly lineage of the Haybecken died out in 1494.
Source: Wikipedia · Licence: CC BY-SA 4.0
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 49.0197, 12.7117