Refrigerated containers
When a fridge is too small

 
Refrigerated containers are used for shipping temperature sensitive goods but in this case they are permanently installed near a research institute for food safety (photo 1, 2). I guess the institute has a lot of food samples and results from analyses so this might be a system to keep them conserved. Nearby is also a liquid nitrogen installation, perhaps for backup cooling or otherwise related (photo 3, 4).

 
1
 
 
2
 
 
3
 
 
4
 
 
Camera: Pentax LX, Pentax-M 35mm f/2.0
Film: Ilford HP5 Plus