By the Sacré-Cœur cathedral in Paris, c1965

This picture was taken on the steps of the Sacré-Cœur cathedral in Paris in 1965.

It took a little effort to find the location, but there were some other images in the set this photo came from which gave me some clues, and the street lamps finally confirmed it. When I compared them to a modern image of the same location, they matched.