Serbostani Mustafa Ağa Mosque
Walking down the Kanlıca hillside and reaching the Beykoz Square, in addition to the pier and the İshak Aga Fountain, you will see another building that will take you 500 years back in time: Serbostani Mustafa Aga Mosque. The Chief Gardener Mustafa Aga had two mosques built in Beykoz, which was renowned for its vegetable gardens. The other one is beside the Yalıköy Hünkar Pier. Mustafa Aga died in 1603. Based on his death date, it is possible that both mosques were built before then.
The mosque is called Beykoz Mosque since it is in Beykoz Square, and was rebuilt in 1809. It is restored again in 1955, except its last congregation area. The famous İshak Aga Fountain is right beside the mosque. Moreover, Hacı Hüseyin Ağa adds a timekeeping house to the complex in 1857. Although it was renovated recently, the ceiling, mihrab, pulpit, and altar of the mosque has an exquisite craftsmanship.