Uninhabited
Oeventrop Abbey

Kloster Oeventrop, once known as the Herz-Jesu-Missionshaus (Sacred Heart Mission House), was an establishment of the Missionaries of the Sacred Heart of Jesus. Located in Oeventrop, in the Hochsauerlandkreis of North Rhine-Westphalia, it served for decades as a central training facility and starting point for missionary activities worldwide.
History+
The Missionaries of the Sacred Heart of Jesus, who had settled in Hiltrup after the Kulturkampf, sought an additional training facility in the early 20th century. At the suggestion of Dean Caspar Berens, the order acquired approximately 10 hectares of land on the outskirts of Oeventrop. A building of red clinker brick was constructed there and inaugurated in 1902. Until 1969, high school graduates were trained here to become priests, who, after a five-year study of philosophy and theology, worked in missions in places such as Papua New Guinea, China, Africa, and Peru. The time ended abruptly with World War II when the building was confiscated in 1939 and converted into a military hospital for soldiers with lung diseases. Over 1300 patients died here and were buried in the Oeventrop military cemetery.
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: 51.3937, 8.1431