The Fatimid mosque ruins are the most important historic remains associated with Agedabia. Little of the original structure is easy to read without a guide, but the site matters because early Islamic architecture has survived only patchily across Libya.
The mosque is usually described alongside the nearby Fatimid palace remains, suggesting that Agedabia was more than a roadside settlement in the early 10th century. Bring water, shade and patience; this is archaeology in a rough, exposed setting, not a polished visitor site.