The Avenue des Champs-Élysées

 https://en.wikipedia.org/wiki/Champs-%C3%89lys%C3%A9es 

https://frenchmoments.eu/avenue-des-champs-elysees-paris/

https://parisjetaime.com/eng/article/all-you-need-to-know-about-the-champs-elysees-a708 

https://en.wikipedia.org/wiki/Karl-Marx-Allee 

https://www.walkingtoursinberlin.com/blog/the-wide-streets-of-berlin-an-urbanistic-tale 

https://en.wikipedia.org/wiki/Kurf%C3%BCrstendamm

https://en.wikipedia.org/wiki/Portland_Place 

https://reginajeffers.blog/2023/06/09/portland-place-londons-widest-street-and-the-adam-brothers-legacy/ 

https://en.wikipedia.org/wiki/Avenue_Foch Now, only 4 lanes wide. 

https://dailyhive.com/vancouver/east-broadway-main-quebec-street-full-reopening-broadway-subway W. Broadway is reduced to 4 lanes.