It seems that the author himself was sometime a guest at the inn in the foothills of the mountains where the fortification was erected, and the love story he shared with the young lady of the castle inspired him to write the novel.
Only the ruined walls of the medieval fortress have survived until today. And even if you don’t believe Jules Verne’s romantic account of the Castle in the Carpathians, it is still worth climbing the rocks of the old fortress.
You will notice that it was erected in a strategic location. From here the nobleman could watch the road used by shepherds and their sheep. And this was also a safe place where he kept his goods and retreated with his family in case of danger.
Râu de Mori, Hunedoara county
Source - References