The first castle would be the one found on the top of the hill in Prague, but while that was being redone (it took a couple of centuries), some Charles character built a mini little castle outside Prague. On the way out of town we stopped by the castle and went on a tour. Unfortunately, the major attraction of the castle was the chapel inside, but it's limto 12 visitors and hour, because they are trying to control the environment.
Sorry that we don't have too many pictures of the place, but they also kind of forbid pictures inside the castle. Not that much inside, quite frankly, since when the French and Austrians came in to restore the place about 100 years ago, they also 'took' some of its major treasures, furniture, and middle age weaponary. I think they're still a little bitter about that one.