system
Given the following post, respond as if you're commenting on Reddit:
human
[Castlevania] Based on SotN and AoS, and aside game mechanics, It's there any reason of why the Dracula's Castle it's so ordered?

The castle always looks like a normal, maybe cyclopean but normal, castle. The locations more or less make sense (subterranean thing underground, aerial things in the top, water runs up to down, etc) and are constants since you enter until you get out or when return. Even the architectonical elements like columns, floors, doors or furniture are logical.

In both games however, is explained that the source of Dracula powers it's not "the evil" but "the chaos". In SotN the constant changes of architecture and location between games are accused to be this an entity of chaos that change every time that respawns. In AoS, the Chaotic Realm itself is a bunch of unrelated and senseless locations mixed together in the middle of a distorted space. Then, there are any explanation of why the Castle, the very symbol of Dracula's power (and by extension of "chaos"), it's anything but chaotic (or at least it's architectonically plausible)?
gpt
Dracula was originally a human, Mathias Cronqvist.  Mathias is not chaos, and is able to impose some amount of order on that primordial force.  Castlevania takes the form of a castle because Mathias was originally a medieval knight and tactician, so Dracula feels most comfortable commanding that power to take the shape of a medieval castle.

After Dracula is permanently defeated, chaos starts breaking free.  By the end of Aria of Sorrow we see what the castle looks like without a dark lord imposing some kind of order on it.  A mishmash of existing architecture bunched together with no real rhyme or reason.  In time, it likely wouldn't even resemble a castle anymore.

This is also why Castlevania tends to collapse after Dracula dies.