When I lived in Europe there were no screens on the windows.
However, there were also pretty much no bugs; we kept the windows and doors open regularly without an issue - if you tried that were I live now in the US you'd have flies inside making a racket and be eaten alive by mosquitoes.
However, there were also pretty much no bugs; we kept the windows and doors open regularly without an issue - if you tried that were I live now in the US you'd have flies inside making a racket and be eaten alive by mosquitoes.