Considering the CLUB THAPSUS in Mahdia?
A VT member wrote the following comment about visiting Mahdia:
Fatimid Fortifications by Willettsworld
Dotted on the southern side of the peninsula are the remains of the original Fatimid walls that were built during the 10th century. To get some idea of how they and the rest of Mahdia would have looked, head to the museum beside the Skifa el-Khala and walk up to the first floor where there's a reconstruction plan.