Dr. Hartlieb's alleged involvement in the creation of the Voynich Manuscript

[Aga Tentakulus]

  (4) Regarding the depiction of the castle in the manuscript, researchers note that the fortress's general layout - four towers connected by walls, a moat or river, and a central building (*Herrenhaus*) - mirrors the original structure of Blutenburg Castle from that era with remarkable accuracy. This has led to the hypothesis that Hartlieb sketched Blutenburg Castle in his draft, while the scribes added the characteristic crenellations to the walls.

   
That’s certainly not an argument.

For example, it’s one of the few castles that display all the features of the VM sketch, whilst also being integrated into a city wall. And, judging by the flag, it stands on German-speaking soil – or, to be more precise, in an area where the Bavarian dialect is spoken.
Today, it’s a palace