UEFA decided that the Euro 2020 will be held in thirteen cities in thirteen different European countries. Can you mention which cities were chosen to host the tournament
One city per nation
There are some UEFA nations that aren't European nations at all...
One of the cities declined to host after it was selected
Edit: I haven't submitted the changes. Once again, sorry.
It wasn't replaced by a new city, but London (which was only to held the Semifinals and Final) took the Brussels matches.