Stonehenge

I believe, we should think of such monuments as a biased thing. Since we're not able to tell what the builders had in mind using such tremendous effort to erect those objects, we cannot be sure what this is all about. It could be just the idea of a crazy leader (think, what archeologists may find by digging out the old Nuremberg Nazi architecture in 8000 years), a kind of religion or just fun. Looking at it, I would love it if it was just for fun.