Fort Spijkerboor was also equipped with the heaviest artillery of all the forts in this section of the front. On the front end, even a rotating gun turret was fitted with two pieces of 10.5 mm calibre artillery with a range of no less than ten kilometres. This turret and guns are still present for viewing.
The two storey fort building was used as a prison on several occasions after World War I. The bars on the windows and the murals in the interior stem from those periods.