In the central highlands of Palestine, a Roman fort at Khirbet al-Kilya in the was converted into a monastery during the Byzantine period. The site is located five kilometres to the east of the Israeli settlement of Rimonim. Overlooking Wādī Wahīda, the fort lies between the Palestinian villages of Dair Dibwan (near the Canaanite city, Tell ET-Tell) and al Taybeh. This paper aims to highlight the presence of Roman forts in Palestine, and their conversion to Byzantine monasteries. Specific goals were to investigate the fort at Khirbet al-Kilya (20 Dumns), to update the stratigraphical and chronological information for the site, and to document the structural remains. Additionally, other objectives included producing a site map and drawings of the building layout and architectural features, since the fort was neither mapped nor photographed by Magen. In addition, we reproduced high quality photos and plans of the archaeological site of Khirbet al-Kilya while providing a descriptive study of the site's architecture and analysis. The methodology of this study relied on sources and references published in various journals, books, and reports, particularly those published by Yitzhak Magen.