As the article says it's used for cultural locations here in the North. I asked my family members what they associate it with and got a variety of answers, including Viking ornamentation, a citadell layout, house foundation, reminiscence of the infinity symbol (persistence through time). As a kid seeing it on the keyboard next to the Apple logo I thought it looked like a leaves or maybe vines. It's a funny thing the potency of such abstract symbols, adaptable to different contexts via multiple interpretations, but whose shapes are also not completely separated from what they represent.