Build me a castle (Wip Sketch) (Patreon)

Don't know why but I always thought that Canterlot is a castle of Celestia. It is white as well as she is, it have style more similar with Celestia than with Luna.
Plus Celestia is an elder sister, and therefore she is the main (in my opinion anyway)

So I thought - What if Luna also want Own Castle?
Something what will fits her style. She also a Monarch, as well as Celestia is, and so I think she has all rights to claim on own castle))
Every Princess deserves own castle! X)
This is how civil wars begin.........