Sivrihisar

Sivrihisar is a municipality and district of Eskişehir Province, Turkey. Its area is 2,748 km2, and its population is 20,087 (2022). Its elevation is .

Pessinus () was an Ancient city and archbishopric in Asia Minor, a geographical area roughly covering modern Anatolia (Asian Turkey). The site of the city is now the modern Turkish village of Ballıhisar, in a tributary valley of the Sakarya River on the high Anatolian plateau at 950 m above sea level, 13 km from the small town of Sivrihisar. Pessinus remains a Catholic (formerly double) titular see. thumb|right|alt=Map of Pessinus by Charles Texier (1834).|Hypothetic map of the ruins at Pessinus by the French explorer Charles Texier (1834).

mosque in Turkeu

Armenian Apostolic temple in Eskişehir