The Siting of Jay and Yahudiya Cities in the Rostāq-i Jay of Isfahan and the Change in the Seat of Power until the Rise of Seljuks

The cities of Jay in pre-Islamic and Yahudiya in the post Islamic period were located in a plain delimited from three sides by surrounding heights. This area، referred to in historical and geographical documents as the Rostāq-i Jay، was the most important rural district of Isfahan''s khora. With rising of Buyids، they decided to change the seat of power from Jay to Yahudiya and consequently the construction of the city wall. Given the complete destruction of both city،s wall، the only data available on their location are limited to the texts and few archaeological traces. Therefore، while analyzing the reasons for change of hub in Isfahan from Jay to Yahudiya، the article tries to determine the location of walls of Jay and Yahudiya in Jay district on the basis of geographical and historical texts، archeological evidence، old maps and satellite photos، and traces them on the current city،s map.