Lego Castle - Engineered by Caleb

It started with "hey Caleb, you want to play with the Legos?" and this is what we ended up with - Caleb's Castle. He has such an awesome attention to detail. Everytime he built something on one side of the castle, he had to make sure and build the exact same structure on the other side. The engineer in him really shows. When we got done making it, Caleb says to me "Dad, I don't want anybody to touch my castle" (translation - Ethan and Abigail better not come near it). So, we moved it into his room for protection. I have since been asked to particpate in the construction of something for both Abigail and Ethan. Anybody have some extra legos lying around??