Since 2009 the Italian archaeological mission in Saudi Arabia is going on with archaeological research in Dumat al-Jandal. Since 2016 the study is focusing on the excavation of the Islamic core of the site, revolving around the so-called ‘Umar mosque and Marid castle, mainly devoted to the transitional period betwen the Late Antique and early Islamic era. The urban area under analysis, the ad-Dira’ district, stands as one of the best preserved Islamic architectonic evidence of Norther Arabia: supported by The Barakat Trust, from 2021 the excavation of ad-Dira’, involving the residential buildings, intents to investigate the transitional period between the VI and VII cent., as well as to promote restoration activities and fruition perspectives.