Alfred Kastler was a French physicist, and Nobel Prize laureate. He is known for the development of optical pumping.
Alfred Kastler in 1966
Kastler ca. 1967
Guebwiller is a commune in the Haut-Rhin département in Grand Est currently in north-eastern France. It was a sub-prefecture of the department until 2015.
St. Léger Church
Notre-Dame Church