The second Junkers G 38 b, D-APIS (earlier registered as D-2500), named, on 29 April 1933, Generalfeldmarschall von Hindenburg, flying as a passenger aircraft for Lufthansa. The photo was likely taken at Berlin Tempelhof airport; among the other Lufthansa passenger aircraft recognizable in the background are Junkers Ju 86 B D-AQER, Inselberg, Werknummer 0011, and several Heinkel He 111 fast passenger transports [Schnellverkehrsflugzeuge].
The windows of the G 38's unusual wing leading edge passenger cabins can easily be recognized. The aircraft is secured to the ground, and a canvas cover protects the cockpit windows.
G 38 D-APIS was later used as a Luftwaffe transport (then registered GF+GG) in Norway and Greece. It was destroyed on 17 May 1941, in Athens-Tatoi. Exact date photo was taken is currently unknown to me. (German Aviation 1919-1945 collection)