Creative Toyshopis an online store that specializes in cardboard toys by Calafant. Calafant toys are designed and created in Germany and Creative Toyshop is the exclusive US distributor of their cardboard toys. The castle is made of sturdy cardboard and can be decorated with the 12 non-toxic washable markers it comes with.
Here's a little excerpt from it:
TheDragonrock Castlewill easily captivate your child for hours. From the initial building and decorating to the pretend play that ensues, your child’s imagination will explore and expand as they play with it. Another feature of these toys that is unique and helps make the Dragonrock Castle and all of the toys at Creative Toyshop environmentally friendly is that they are recyclable. When your child is “done” playing with the Dragonrock Castle you can either take it apart and save it for another child or recycle it with your other paper and cardboard recycling.