The Ulu Cami or Great Mosque. It was built in 1366 by Işaq Bey, grandson of Saruhan. It is the oldest mosque in Manisa. It has a garden with a şadırvan (fountain for ritual ablutions) surrounded by columns (spolia: recycled from Roman buildings) in its front. To the right is a medrese, and there is the türbe (grave monument) of Işak Çelebi, his wife Gülgün Hatun and his two sons.