Kayhan Mosque
It was built by Hacı Mehmet, son of Kayganzade Musa, one of the merchants of Bursa, in the 15th century.  The mosque was rebuilt in its current form in 1873 by a charitable soldier named Kolağası Halil Efendi, who was in Bursa. The current state of the mosque is different from the plan and construction features of the mosque when it was first built. There is a dome covering a square area in the middle of the mosque.

It is stated that the mosque had eight domes when it was first built.