Reverse search by the given image doesn’t return anything valuable, so let’s find the text from the image:

And the first image result is the original photo, where the text pattern was taken from. Open the link and go to the 27th photo on the slider. We see the photo from the search results. The text under the photo says:

Come to rue Victor Hugo to maybe win your Christmas tree! / 1974 - Le Progrès Archives

This is what we are looking for: everyone who cam to the Victor Hugo street got an oportunity to win a Christmas Tree (fr. sapin de Noël)

As far as it was in 1974, so we need to find the newspaper released on December, 25th 1924.

And the first link gives us posibility to select the year and the date of the newspaper

On the bottom of the page we see the lit Christmas tree. If we zoom the scan, we will see the caption under the photo:

UNE CURIEUSE COUTUME DANOISE means ‘a curious Danish custom’, and on the next line there is the name of the Denmark’s capital city - Copenhagen (Copenhague). And this is the right answer: