There was an infirmary inside the southern angle of the perimeter and a camp prison within the eastern angle. There was also a camp kitchen and a camp laundry. The camp's capacity became inadequate and the camp was expanded in 1938 by a new rectangular area (the "small camp") northeast of the entrance gate and the perimeter wall was altered to enclose it. There was an additional area ("Sonderlager") outside the main camp perimeter to the north; this consisted of two huts Sonderlager 'A' and 'B' built in 1941 for special prisoners that the regime wished to isolate.