I don't understand the point of something like a palace or something like the above. Sure, it looks nice, but I can't possibly see it used as a HQ.
How so? A headquarters is simply where most ideas/important topics are discussed in an organization.
Although most are glass and modernized, they don't HAVE to be.
For example,

(The HQ for a basket weaving company.)
When you look at it, you wouldn't see how it could be used as an HQ because the design seems silly, but it's still use-able.