There is an abandoned anti aircraft small military base right in the forest of Rades
(a small city 20-ish minute drive south of Tunis).
Urban Legend say that this small base was used by the German’s army during WWII.
Check also this German WWII war cemetery south of Tunis.
Now it’s completely abandoned and swallowed by the forest.
You can imagine the canons in those circular places.
Bunkers and trenches are surrounding them.