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In page Bamberg:

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In 1801, A. F. Marcus bought the castle and completely repaired it. His friend, the famous German writer E.T.A. Hoffmann, who was very impressed by the building, lived there for a while. The next owner, Anton von Greifenstein, in 1818 founded an association to preserve the castle. This society still maintains the entire property today.[citation needed] The Altenburg today houses a restaurant.[8]