ISTANBUL, TURKEY - APRIL 27: A drone photo shows the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: A drone photo shows the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: A drone photo shows the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: A drone photo shows the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: A drone photo shows the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: A drone photo shows the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - APRIL 27: An interior view of the mosque under construction, which began 4 years ago, planned to open for worship on the last Friday Prayer of the holy Islamic Month of Ramadan, at Taksim Square in Istanbul, Turkey on April 27, 2021. ( Muhammed Enes Yıldırım - Anadolu Agency )