First off, the castle. I went a little crazy on this concept probably because I love castles so much and I have been reading my guidebooks for a trip to Greece I am about to take (the DK versions with all the lovely architecture illustrations with cutaways). The tower in the center is where the alphabet is heavily guarded. I also added a hedge maze, aviary, orchard... I am working on a map too.
The throne room. I am integrating a lot of letters in the design. This scene is from the first chapter with Rho, the King and Sir Clooney.
Read some chapters here: http://wordsworthdragon.blogspot.com/p/chapter-1.html
You can read up to the third chapter.