A picture of the Lion Memorial in Lucerne, Switzerland which was taken in the early 1960s.
The date of the picture is actually almost irrelevant since for the most part this is a timeless image. Other than the changes which will occur due to weathering, which would take centuries to be noticeable, I suspect I could take virtually the same picture today.
There is more information about his monument on the wikipedia page here.
Work of ArtDate Picture Taken: