Could it be them optimising their floorplan? Direction of the spiral is based on...

JP44 on Oct 9, 2023 | parent | context | favorite | on: Medieval staircases were not built going clockwise...

Could it be them optimising their floorplan? Direction of the spiral is based on e.g. the largest possible entry or smallest obstruction(in terms of construction and visually for the rest of the room/castle?