[1] A mosque and a shrine in honor of Seyyid Battal Gazi, a legendary Muslim folk hero, who fell in a battle against the Byzantine army in this area in 720, was built in 1207/08 at a place southeast of Eskişehir, known today as Seyitgazi.
It was donated by Ümmühan Hatun, mother of the Seljuq Sultan of Rûm Alaeddin Keyjubat I (1188–1237).
[2] During the Ottoman Empire era, social complex buildings were added around the mosque, including madrasa, almshouse and dervish lodge.
Ottoman sultans Mehmed the Conqueror (reigned 1444–1446, 1451–1481), Bayezid II (r. 1481–1512) and Selim I (r. 1512–1520) enriched the complex by additional buildings.
The site of the complex is situated on the Hajj-route of Istanbul-Baghdad-Hejaz serving a stopover place for pilgrims.