In collaboration with the Service of Antiquities of the Ḥaḍramawt Valley (Say'ūn), the French Archaeological Mission in Jawf-Ḥaḍramawt has been studying the organization of the territory of an ancient South Arabian city in Ḥaḍramawt through excavations and survey, and presents here a first view of its results. Located in a meander of the Wadi Masīla at the confluence of six secondary valleys, the site of Makaynūn includes a central fortified area and was probably part of a regional defensive network. Three sanctuaries located inside the city highlight its function as a religious centre. Seven other sanctuaries were found in the associated agricultural territory. The latter also included villages scattered at the outlets of the secondary valleys and several hydraulic structures forming an irrigation network, which took advantage of the runoff of the six secondary wadis. It was organized in a way that allowed the irrigation both of the fields located in the central plain, and of those located at the outlets of the secondary valleys. The inscriptions found at the site and in its vicinity, as well as material collected in the different excavated levels in the central part of the site suggest that the town, probably occupied during the first half of the first millennium BC, had reached its maximum development between the fourth and the second centuries BC.