According to research, Eskişehir was founded by the Hittites as a city. M: Ö In the 12th century, Eskişehir was conquered by the Phrygian kingdom. Due to its geographical location, many different states tried to conquer Eskişehir.
After the kingdom of Phrygia, Eskişehir conquered by the Lydia and Persian kingdoms respectively. After the Persians were defeated by Alexander the Great, they left Eskişehir. In the 2nd century BC, Eskişehir was conquered by the Roman Empire.
In 1074, Eskişehir was conquered by the Seljuk State. In 1289, the Seljuk state left the control of Eskişehir to the Ottoman Empire. After the breakup of the Ottoman Empire, Eskişehir has been a city of the Republic of Turkey.