These photos were shot by a guy Jeny met on her "lost plant mission". The scene is captured in Video V249 "The Lost Plant and Jeny On Mission" (mark 3:35). Besides two motifs in the lost plant area (Jeny in T-shirt on stairs, bridges and platforms; or Jeny naked in the garden) there are also some shots on the top floor of a parking garage in Cologne city center with the Cologne cathedral in the background.
Here are some example photos from the set: (ATS)