The city of Nush Abad is located at 5 km from Kashan (Esfahan region) and is known as one of the capitals Sasanian in the age of Anushirvān. This city, which is located in the ancient and historical areas north of Esfahān, derives its name from the root "anushe" with the meaning of eternal.
Here, in addition to the underground city of Ouyi, the Jame'h mosque and the mosque of the Imam Ali (A) of the Mongol period, the Sizān raw brick fortress and the historic Eshāgh Ābād bridge, of the Seljuk period, constitute the main tourist attractions and they are among the places to visit of Kāshān and Nush Ābād.
Even the Atigh mosque, which dates back to the Seljuk era, is one of the most important attractions of the place. What made the city famous is the presence of the underground city of Ouyi which attracts many lovers of history, art and archeology.