I propose that metropolises are the best ‘golden spike’ for the Anthropocene. Based on six selection principles with three ideas, I have identified seven metropolises in seven countries as sites for the Anthropocene’s ‘golden spike’ symbols and museums. I hope that the United Nations will artificially design and build identical Anthropocene’s ‘golden spike’ and museums in these seven metropolises as permanent stratigraphic markers of the Anthropocene.