Great Mosque of Samarra built
848 CE.
Shown on the map at 34.206°, 43.880°.
The Great Mosque of Samarra or Al-Malwiya Mosque (Arabic: جَامِع سَامَرَّاء ٱلْكَبِيْر; Arabic: مَسْجِد سَامَرَّاء ٱلْكَبِيْر; Arabic: ٱلْمَسْجِد ٱلْجَامِع فِي سَامَرَّاء, lit. 'The Congregational Mosque in Samarra' or Arabic: جامع الملوية, romanized: Jāmi‘ Al-Malwiyya, lit. 'Mosque of the Spiral one'.) is a former congregational mosque, now in partial ruins, in Samarra, in the Saladin Governorate of Iraq. The mosque was commissioned in 848 CE and completed in 851 by the Abbasid caliph Al-Mutawakkil. At the time of construction it was the world's largest mosque. It is known for its 52-metre-high (171 ft) minaret encircled by a spiral ramp. The former mosque is within the 15,058-hectare (37,210-acre) Samarra Archaeological City UNESCO World Heritage Site, listed in 2007.
Text from the Wikipedia article Great Mosque of Samarra, licensed CC BY-SA 4.0.