Rolf Tschammer, chronicler of the Oranienburg area, has long delved into the history of the sanatorium. He has always lived in the vicinity, and knows the place like the back of his hand. Tschammer provides an historical overview, drawing on his personal involvement.

The lecture will run about 40 minutes, and be in German. After a brief break, the 1991 film Kreuzwege - Bilder einer Landschaft will be screened (about 30 minutes), in which the history of the Heilstätte on the Grabowsee is told by people who lived and worked there.