To be privately owned
Oberfrauenau Manor

The Oberfrauenau Manor House, also known as the Old Castle, is a historic estate house in the Bavarian Forest. For centuries, it has formed the core of the glassworks estate of the same name and is closely associated with the Poschinger family.
History+
The origins of the Oberfrauenau estate date back to 1492 when an existing glassworks changed hands. In 1605, Franz Poschinger acquired the glassworks estate, which has remained in the possession of the Poschinger family ever since. Around 1650, the current manor house, the so-called Old Castle, was built. Elector Karl Theodor granted Benedikt Poschinger the lower Hofmannsrecht and a noble title in 1785, elevating the estate to a Hofmark and releasing it from electoral suzerainty. In the early 19th century, further glassworks were established on the grounds, including the Neuhütte built around 1825 by Georg Benedikt von Poschinger, which, however, burned down in 1860.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Konrad Lackerbeck / CC BY 3.0 via Wikimedia Commons
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: 48.9986, 13.3195