New York City, Köln (Cologne), and Tehran are among the cities depicted! Been to the first two, hope to get to the third one of these days.
It's fun to speculate how our understanding of the planet and solar system would have evolved if we had a giant, perpetual image of rings in our sky, whose appearance changed only as one changed latitude. It would have had a huge influence on philosophy and religion as well. I wonder how many expeditions would have been launched to find the source of the rings, sort of like trying to find the end of a rainbow?