This is the Hunyad castle from Hunedoara, Trasylvania, Romania. This is the most interesting castle I've seen as it has strong fairy-tale looks. The river on the right is named Zlasti.
Stories say that Vlad Tepes, the person that inspired the Dracula character, has been imprisoned here for 7 years after being deposed in 1462. Here Vlad impaled bugs and rodents that were invading his quarters.