In an interview with the national television station broadcast Wednesday, Charles calls Transylvania Romania's "best export," and a "national treasure." The prince, on a five-day visit to Romania, is known to be enamored with the unspoiled landscape and centuries-old rural farming traditions in Transylvania where he owns several houses and cottages.

Prince Vlad the Impaler was a Romanian warlord whose cruelty inspired Bram Stoker's 1897 novel, "Dracula" and spawned dozens of Hollywood movies about vampires in Transylvania.