The excavation conducted on Yehuda Ha-Yammit Street in Yafo revealed the remains of three strata: graves from the Persian and Hellenistic periods; a Crusader-period moat; and late Ottoman-period wells. The moat, dated to the end of the Crusader period (thirteenth century CE), was hewn in the kurkar rock and lined with retaining walls. The finds retrieved from within the moat fill included potsherds and glass finds dated to the Crusader period. An Ayyubid coin of Al-Naṣir Yusuf II, found in a probe next to the moat’s southern wall, probably attests that the moat was destructed during Baybars’ conquest of Yafo in 1268 CE. This is the first archaeological evidence of the location of the Crusader moat in the south of the city.