Holy Basin (Hebrew: האגן הקדוש, ha'agan ha'kadosh, or Historic Basin, Hebrew: האגן ההיסטורי, ha'agan ha'histori ) is a modern Israeli term for a geographical area in Jerusalem that includes the Old City and its adjacent territories. The term was coined by the contemporary Israeli generation while a political-academic discourse on how does one refers to the area in Jerusalem where the historical and holy sites are concentrated. The term is being used in the field of geographical research and in contemporary geo-political studies specializing in urban planning, such as local master plans for Jerusalem and studies concerning the political future of the city.