Blue sky
Solid matter and thin air

 
A trick from painters is to turn their canvas upside down to get a fresh impression of the composition. So this building is turned to the right (as if photographed upwards while standing parallel to the side) and it gives a whole new look of its construction indeed. BTW all windows are blinded for some reason. Transparent colours were added later on.


 
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Camera: Nikon FM3a, 24mm f/2.8 AI Nikkor.
Film: Ilford FP4 Plus.