Help locating where this picture of my father was taken during WWII

Hello all, first post here…

I’m hoping someone can help me locate where this picture of my father was taken during World War 2. He was in the US military and stationed in Europe. I’m guessing this was around 1942 or 1943.

My wife and I are planning UK trip this summer and a stop in Paris.

This is a bucket list item….try to find this spot and take a picture at the same location.

Thanks for your help!!