I've been working on this build for quite a while. The plot and underground area has been in place for over a year. I've come back to it with renewed zeal as I actually have a plan to finish it now.
I would like everything from 806, 0, 505 to 930, 256, 629 protected. This will protect the physical structure as well as the landscaped region around it. I've made a lot of progress on the build itself, but it will not be finished for quite a while as it will span from bedrock to max height.
The palace resides above ground, greeting visitors with high ceilings, an elaborate floor plan, and a spacious main hall. Rising high above the main palace will be a tremendous spire that pierces the heavens. Excavated beneath the palace is a perilous dungeon, full of dangerous monsters, that snakes down to bedrock.
The build needs to be protected because all of it will be open to the public. I will be constructing a new personal in an off-site area.
http://smp.opticraft.net/map/#/862/64/571/-1/2/0