Zeyrek Mosque ( Pantokrator Monastery Church )

The Chora Church or Kariye Mosque (Turkish: Kariye Camii) is a medieval Greek Orthodox church building, mostly used as a mosque since the 16th century

Fethiye Mosque or Theotokos Pamakaristos Monastery is a mosque located in Çarşamba district of Fatih district of Istanbul. In fact, it was built as a church by Mihail Glabas Tarkaniotes, one of the Byzantine notables, in the late 13th century.