Glad you mentioned Krzyżtopór. I love it and I think it deserves much more attention than it gets. BTW it is pronunced [kʂɨʂˈtɔpur], tough isn't it? But it is not a castle strictly speaking. It was just a palace and had no military function at all. It's good to learn about other places worth visiting in this area because it is full of ancient Polish monuments. This area was the stronghold of Polish nobility and plenty of the most important members of Sejm - Polish parliament in 16th and 17th century came from here.