I, as a street photographer, frequently look down. That’s where the street is, of course. There are also interesting things to see on the sidewalk. My photo below reminds me of a flag. See Flag of an Unknown Country.
I like geometry. Sometimes sidewalks (or parts thereof) line up just right. I’m not sure if there are any countries that do not have flags, but if there are, my image is available.* * (after appropriate licensing, etc. etc. – have your ambassador get in touch with me.)