Analysis of information sources in references of the Wikipedia article "Qasr el Yahud" in Portuguese language version.
The Holy Monastery of St John the Baptist on the banks of the Jordan River/Qasr-el-Yahud […] The perimeter walls, specifically their uppermost portion, terminate at battlements, which lend the monument the form of a Medieval castle. This is in all likelihood why its Arab name is Qasr el Yahud [The castle of the Jews]