ISTANBUL, TURKEY - MAY 25: A drone photo shows aerial view of the mosque, which construction process was began 4 years ago, at Taksim Square in Istanbul, Turkey on May 25, 2021. The mosque which became one of the symbols of Taksim Square, has the signatures of architects Sefik Birkiye and Selim Dalaman, will open its doors for visitors on tomorrow. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - MAY 25: A drone photo shows aerial view of the mosque, which construction process was began 4 years ago, at Taksim Square in Istanbul, Turkey on May 25, 2021. The mosque which became one of the symbols of Taksim Square, has the signatures of architects Sefik Birkiye and Selim Dalaman, will open its doors for visitors on tomorrow. ( Muhammed Enes Yıldırım - Anadolu Agency )

Mosque in Istanbul's Taksim Square opened its doors to worshippers

Mosque in Istanbul's Taksim Square opened its doors to worshippers

ISTANBUL, TURKEY - MAY 25: A drone photo shows aerial view of the mosque, which construction process was began 4 years ago, at Taksim Square in Istanbul, Turkey on May 25, 2021. The mosque which became one of the symbols of Taksim Square, has the signatures of architects Sefik Birkiye and Selim Dalaman, will open its doors for visitors on tomorrow. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - MAY 25: A drone photo shows aerial view of the mosque, which construction process was began 4 years ago, at Taksim Square in Istanbul, Turkey on May 25, 2021. The mosque which became one of the symbols of Taksim Square, has the signatures of architects Sefik Birkiye and Selim Dalaman, will open its doors for visitors on tomorrow. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - MAY 25: An exterior view of the mosque, which construction process was began 4 years ago, at Taksim Square in Istanbul, Turkey on May 25, 2021. The mosque which became one of the symbols of Taksim Square, has the signatures of architects Sefik Birkiye and Selim Dalaman, will open its doors for visitors on tomorrow. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - MAY 25: An interior view of the mosque, which construction process was began 4 years ago, at Taksim Square in Istanbul, Turkey on May 25, 2021. The mosque which became one of the symbols of Taksim Square, has the signatures of architects Sefik Birkiye and Selim Dalaman, will open its doors for visitors on tomorrow. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - MAY 25: An interior view of the mosque, which construction process was began 4 years ago, at Taksim Square in Istanbul, Turkey on May 25, 2021. The mosque which became one of the symbols of Taksim Square, has the signatures of architects Sefik Birkiye and Selim Dalaman, will open its doors for visitors on tomorrow. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - MAY 25: An interior view of the mosque, which construction process was began 4 years ago, at Taksim Square in Istanbul, Turkey on May 25, 2021. The mosque which became one of the symbols of Taksim Square, has the signatures of architects Sefik Birkiye and Selim Dalaman, will open its doors for visitors on tomorrow. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - MAY 25: An interior view of the mosque, which construction process was began 4 years ago, at Taksim Square in Istanbul, Turkey on May 25, 2021. The mosque which became one of the symbols of Taksim Square, has the signatures of architects Sefik Birkiye and Selim Dalaman, will open its doors for visitors on tomorrow. ( Muhammed Enes Yıldırım - Anadolu Agency )

ISTANBUL, TURKEY - MAY 25: An interior view of the mosque, which construction process was began 4 years ago, at Taksim Square in Istanbul, Turkey on May 25, 2021. The mosque which became one of the symbols of Taksim Square, has the signatures of architects Sefik Birkiye and Selim Dalaman, will open its doors for visitors on tomorrow. ( Muhammed Enes Yıldırım - Anadolu Agency )