How to highlight city borders and countryside in OSM?

Question

OpenStreetMap

It is necessary to highlight the boundaries of cities and the countryside in OSM. In the form of polygonal objects. I can't figure out how to do it at all.
Here is the admin_level tag.
I'm trying to make a selection with it. It turns out something like this:

And I need the boundaries of cities in the form of polygons. So that if the cities did not touch, then there was an empty space between them. Is that possible?

Answer 1

the boundaries of cities, or rather settlements, are not included in the admin_level hierarchy.
borders of cities, more precisely settlements with a population of more than 5 thousand, search for polygons with place=city or place=town
https://wiki.openstreetmap.org/wiki/RU:Key:place