Qasr-e Shirin

Qasr-e Shirin (; also Romanized as Qaşr-e Shīrīn and Qasr-ī-Shīrīn; also known as Ghasr-ī-shīrīn and Ghasr-shīrīn, Kurdish: قەسری شیرین) is a city and capital of Qasr-e Shirin County, Kermanshah Province, Iran. At the 2006 census, its population was 15,437, in 3,893 families. The city is populated by Kurds.
Name.
The city is named after Shirin, the Christian wife of the Sasanian King of Kings ("shahanshah") Khosrow II ().
History.
In June 2006, archaeological excavations in Shirin's castle resulted in the discovery of the dais of the castle which was used as the seat of the king.
Climate.
The city is well known for its agricultural productivity due to rich soil and plentiful water from the Hulwan (Alwand) River which runs through the city. The weather is mild in winter but hot and dry during the summer. 
Recent excavations.
The site of Qasr-e shirin was searched for the first time in 1891 and again in 1910.
Excavations in 2006 led to the discovery of a wall of forty miles long, built by Khosrow II to protect the city. This wall extends beyond the border with Iraq.
A canal dug at the time of the Sassanids, ends in Iraq. The water of the river Hulwan (Alwand) entered the channel by a trench and then led the water to Iraq. This canal covered with stucco stone is considered one of the masterpieces of civil engineering in irrigation.
Economy.
Qasr-e Shirin has for long played an important economical role in the region. A large share of the country's exports is done via Qasr-e Shirin with its two main border points Khosravi and Parviz Khan border crossing.
Qasr-e Shirin has many modern and chic restaurants, with four three-star hotels and many other two-star hotels, serving both pilgrims to Iraq's holy Shia shrines and tourists and businessmen visiting the city. In fact, it is the city of hotels and restaurants.
Transportation.
The city is near a railway route under construction called Rahahane Gharb (Iran west railway) planned to connect Iran to Iraqi railway system and ultimately to the Syrian Mediterranean port city of Latakia. Its construction is due to be completed by 1403 Iranian year through Kermanshah–Khosravi line.
Health systems.
Hazrate abolfazl abbas is the hospital that serves the town and people from Iraq.https://www.magiran.com/paper/495983/?lang=en
Notable people.
See Kermanshahis