Modding

Even from your screenshot, I can tell that the ID is not separate... It has a different appearance on the map, but if you enter it, it will be a regular Haven.

You probably didn't look closely enough; Hill_castle is one line below Heaven. As for the external or internal appearance, all of this can be changed. The "Interer" line changes the internal appearance (it's not difficult to create a model). In general, Ment, it seems you're not aware of this.