A while back this is what the exterior of my hill turning into castle looked like. Sorry for the nighttime view, as I said before, I'm kind of terrible about actually taking screenshots.
|Before (click to expand)|
|After (click to expand)|
|Outside the Shop - Down is the Aqueduct and Excavation, right is further into the base.|
|The Aqueduct proper from the deepest point looking upstream.|
|The lowest end of the service tunnel beneath the Aqueduct|
|Hill interior - still under construction|