Haven't really nailed the scale down at this point - I tried to keep the machiolation on the wall tops the same size, also there are four doorways exposed on the central citadel. I imagine those doorways to be large or at least much taller than necessary. You can probably guess at structural size based on machiolations and doorways, but again, I just whipped this out last night shooting for a distinctive look. I'll determine scale over the next few days. Good question, though!

GP