[5] The original ancient city of Gor, dating back to the Achaemenid period, was destroyed by Alexander the Great.

It was again revived by the Buyids under Fanna Khusraw, but was eventually abandoned in the Qajar era and was replaced by a nearby town, which is now Firuzabad.

It had a circular plan so precise in measurement that the Persian historian Ibn Balkhi wrote it to be "devised using a compass".

[6][7] It is thought to have been the architectural predecessor of the Great Mosque of Samarra of Iraq and its distinctive minaret, the malwiya.

[9] Gōr and Istakhr strenuously resisted the invading Arab Muslims in the 630s and 640s; they were conquered by Abdallah ibn Amr in 649–50.

[10][11] The city was eventually abandoned in the Qajar era and its nearby settlement was populated, which is now the modern Firuzabad located 3 km to the east of the site of Gor.

[11] Today, among the attractions of Firuzabad are the Sassanid Ghal'eh Dokhtar, the Palace of Ardeshir, and the fire temple and its nearby Minar.