However, it regained its status as a mosque with a Presidential Decree on Aug.1, 2020. After this decision, the mosque's restoration began and has now been completed after four years. During the opening ceremony, live connections will be made to the 33 works, including the Kariye Mosque in Istanbul. The mosque's restoration was completed after four years.After being used as a museum for almost 80 years, Istanbul's historic Kariye Mosque reopened for worship again on Monday. "79 years later, Kariye Mosque was restored by our Foundations General Directorate and reopened for worship,” Safi Arpagus, the mufti of Istanbul, said at the opening ceremony.