Examples of city/country/region selection design?

Question

User interface

Hello!
It is necessary to make a large nested block with a choice of city/country/region. Adaptively.
Are there examples of such design? To be comfortable

Answer 1

The best control is the one that does not require the user to do any gestures at all. Now there is a technology for obtaining geodata from the user.
Basically, everyone does this:
1) the user went to the page
2) a pop-up popped up for him, where it says that they say we have identified your city as Pupinsk
3) below 2 buttons "Correctly identified", "Incorrectly identified"
4) if the user presses "Correct", then his cookie is written where he is from (so that next time he does not see this popup at all)
5) if he clicked "Incorrect", then he is shown the usual select, where he chooses where he is from
5.5) you can show an unusual select, and the field with auto-completion, entered more than 3 letters, a window popped up with options,