Cahokia‘s just one of almost a thousand sites around the world that UNESCO considers to form, “part of the cultural and natural heritage” of the world that has “outstanding universal value.”
It’s a remarkable selection of places, from natural geological wonders like the Grand Canyon, to biological preserves like Peru’s Manú National Park, to cultural landscapes like that of Bam, Iran.
The long, detailed descriptions of the importance of these sites makes the World Heritage List website is a remarkable resource for cultural and physical geography.