Cabaret filmed at Schloss Eutin, Eutin. This former summer home of the Oldenburg dukes, now a museum open in summer, serves as the baron's mansion. On screen it's Maximilian von Heune's mansion.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Eutin and it tells you what was shot around you, how to get there, and whether you can actually go in.
Download Venture for iOS Android