The Imperial Palace...
When one hears this term, what always comes to mind is that it must be the highest structure around, surrounded by gardens on all sides as far as the eye can see, filled with hundreds or even thousands of servants, and the masses have to kneel when they see it.
However, the imperial palace on the steep hill does not have any of these features. Rather, it can be said that it was built to be as practical as possible and forgot to show anything that indicates luxury in it, but this is not very strange since everyone here is a soldier and busy with something...
The palace building itself was created by divine blacksmiths. In terms of solidity, it was not inferior to the metallic wall that stopped millions of buds before, and in terms of other defenses, it was not inferior to the tent in which he spent two years with Zara. Also, the size of the palace under the ground is the same size as the structure above it or even more!