At this time, Shapur I, the Sassanid king, after defeating the Roman Empire in the Battle of Edessa, ordered the construction of a city called Bishapur in 266 AD.

[29] During the Arab conquest of Persia in 638 AD, Umar assigned one of his commanders named Mojashe bin Masoud to conquer Shapur-Khwarrah.

Among in the year 643 AD and after the caliphate of Uthman, the people of Shapur-Khwarrah, under the command of Shahrag's brother, one of the Sassanid nobles declared independence.

[37] After 'Adud al-Dawla came to power, this king paid special attention to Kazerun, the main reason for which was the location of this city on the commercial highway of the back shore of the Persian Gulf and Siraf Port.

[39] Kazerun was considered one of the important centers of Textile production during the time of Buyid dynasty, and for this reason, it was known as Damietta of Ajam (Persia).

[40] During this period, Abu Ishaq of Kazerun, a famous Sufi, founded the Kazeruniyeh Sufism in this city and started spreading Islam and fighting against Zoroastrians.

This fame was due to the expansion of the Kazeruniyeh Sufism and its Sufi lodges in Iran, India, China, and the Ottoman Empire, and was influenced by the religious appeal of Abu Ishaq of Kazerun.

[44] With the beginning of the 10th century, a large network of merchants of Kazerun city entered all over Iran and the countries of India, China, and the Ottoman Empire and started trading.

[49] Among the kings of India who were disciples of the Kazeruniyeh Sufism, we can mention Balban,[50] Alauddin Khalji[51] and Muhammad bin Tughluq.

[56][57] In the 10th century AD, the Balyaniyeh Sufism was also founded by the famous Sufi of that time, Sheykh Abdollah Balyani in Kazerun.

[63] Khajeh Ali Qoli Khan, in the position of governor of Kazerun, made many efforts in the direction of the development and settlement of this city.

[64] Khajeh Ali Qoli Khan Afshar Kazeruni, the then ruler of Kazerun, played an important role in the establishment and stabilization of the Zand dynasty.

But with the intercession of Mirza Mohammad Kalantar, the Fars Sheriff, Khajeh Ali Qoli Khan Afshar, the ruler of Kazerun is forgiven.

This issue made Khajeh Ali Qoli Khan Afshar very angry, and he left the government of Qom and Kashan and returned to his hometown Kazerun.

Lotf Ali Khan Zand and his forces left their horses and fled from the Qebleh mountain range located in the south of Kazerun city towards Dashtestan and Bushehr.

For example, in 1856 and during the time of Naser al-Din Shah Qajar, Ali Mohammad Khan Qavam al-Mulk was appointed to the government of Kazerun.

However, with the appointment of Ahmad Akhgar as the commander of the gendarmerie forces of Kazerun, who himself was considered a pro-liberation figure, and the return of Naser Divan Kazeruni to the city, the anger of the people subsided.

But finally, Wilhelm Wassmuss dissuades them from attacking and suggests that they leave the liberation of this city to the people of the same region and wait for bigger battles.

[77] General Percy Sykes, one of the British officials and the founder of the South Persia Rifles, upon hearing the news of this incident, sent his troops to Kazerun.

Children and women began to cry and mourn, and men held Qurans in their hands and turned to the sky, so that God would protect them from the harm of bullets.

With the beginning of the Pahlavi rule, the sovereignty of Kazerun remained in the hands of Naser Divan Kazeruni, who had returned from exile, until 1941.

Bishapur, which was built with the Greek urban planning method, includes a collection of magnificent works such as Anahita Temple, Valerian Palace, Ivan-e Mosaic, Ceremonial Hall, inscriptions, castles and other historical monuments.

[114][115][116] Chogan valley (romanized: Tang-e Chowgān) is a collection of 6 magnificent Reliefs of the Sasanian period that have been registered in the list of UNESCO World Heritage Sites.

[139][140][141][142] The mausoleum of Imamzade Seyyed Hossein, the great-grandson of the fourth Imam Shia Islam, is one of the most prominent religious shrines in the south of the country.

[144] Tikab valley (Persian: تنگ تیکاب romanized: Tang-e Tikāb) is considered a historical and natural resort.

[170] Other natural attractions of Kazerun include the heights of the northern and southern mountain ranges, the plains around the city, as well as the historical Kalani and Buranjan Cypresses.

This route is also touristic and passes through the middle of the forest Barm plain and the edge of Parishan Lake and is considered one of the most beautiful roads in the country.

A part of this route passes through the ancient city of Bishapur and Tang Chogan, which is a UNESCO World Heritage Site.

[256][257] Other popular and long-standing sports in Kazerun include football, wrestling, cycling, basketball, volleyball, and Pahlevani and zoorkhaneh rituals.

Firouz Naderi, (the associate director of NASA's Jet Propulsion Laboratory (JPL), responsible for Project Formulation and Strategy), was born in Kazeroon.