Westerners generally considered Jerusalem as the center of the world. Sometimes the "new Jerusalem" (a mythical place of precious stones and 15 gates) was depicted as the spiritual center.
I think Arim (cupola of the earth) was the middle-eastern center of the world. It doesn't seem likely that middle-eastern towers would be drawing western castles unless it was a westerner who was trying to draw something middle-eastern using western attributes.
The Indians had Ujjaim ("heaven on earth") which is actually at 0° longitude. It also doesn't seem likely that Indian towers would be drawn as western castles.
I think Arim (cupola of the earth) was the middle-eastern center of the world. It doesn't seem likely that middle-eastern towers would be drawing western castles unless it was a westerner who was trying to draw something middle-eastern using western attributes.
The Indians had Ujjaim ("heaven on earth") which is actually at 0° longitude. It also doesn't seem likely that Indian towers would be drawn as western castles.

