One might argue that the extent of what most people know about Transylvania can be summed up in one or two words: "Vlad Dracula." (Or "Where is Transylvania?" Well, it's in Romania, and Romania is found in Eastern Europe.)
However, this can lead to the question is Transylvania all about Vlad III the Impaler? He was born there while his father was in exile from Wallachia. He did many of his deeds in Transylvania, and he earned his name "Impaler" in Transylvania.
novel Dracula. So, although there is a tourist element which embraces Vlad the Impaler, there is so much more to Transylvania than him.