Originally built as a Franciscan Monastery in the early 1900s known as St. Josefsheim, it was used for the euthanasia programme under the Nazi regime. It was liberated by the British and subsequently turned into the British Military Hospital Hostert. In the late 1960s it was turned into a secondary school known as Kent School. I attended the school throughout my secondary school career, from 1982 to 1989.
In 1987 it merged with Queens School on JHQ Rheindahlen to become Windsor Upper School. The site was handed back to the local government in 1991 and has been derelict ever since.
In July I took the opportunity to revisit the site, the first time I’d been back since walking out after my last A Level in late June 1989.
You can read more about the sites terrible history prior to the 1950s here: https://www.urbex.nl/st-josefsheim-kent-school/ and http://www.uvm.edu/~lkaelber/children/waldniel/waldniel.html and https://www.waldniel-hostert.de/st-josefsheim-waldniel-1909-1937-2/