Uninhabited
Grabau Manor

In the Schleswig-Holstein municipality of Grabau stands Herrenhaus Grabau. It is characterized by its eclectic architecture, which combines various European stylistic forms from five centuries.
History+
The origins of the Grabau estate trace back to a Wendish village. In the Middle Ages, the land was owned by the Hummersbüttel family before passing to the Buchwaldt family through marriage. Founded in the 16th century as a Meierhof of the Borstel estate, it remained with the Buchwaldts until the end of the 18th century. After several changes of ownership, Grabau was separated from Borstel in 1804 and declared an independent noble estate in 1806 under Joachim Christoph Janisch. Between 1861 and 1906, it belonged to the Wehber family. In the early 20th century, merchant Gustav Lahusen acquired the estate and had the current manor house built between 1906 and 1908. After 1932, the estate briefly passed to Friedrich Bölck, who sold it to the Wehrmacht in 1936.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://www.wehrbauten.de/thread.php?threadid=562
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: 53.8055, 10.2700