These information posters are hung in the Visitors' Center at the base of the hill below the castle.
(To read high resolution
images click each poster from left to right. Then use
your web browser controls or press 'Ctrl +' to increase the image size.)
This model in the Visitors' Center shows what the castle and its outbuildings probably looked like based on the surviving foundation
walls.
(You can view high resolution images by clicking each photo.)