Al Qāţūl

The Great Mosque of Samarra (Arabic: جَامِع سَامَرَّاء ٱلْكَبِيْر, romanized: Jāmiʿ Sāmarrāʾ al-Kabīr, Arabic: مَسْجِد سَامَرَّاء ٱلْكَبِيْر, romanized: Masjid Sāmarrāʾ al-Kabīr, or Arabic: ٱلْمَسْجِد ٱلْجَامِع فِي سَامَرَّاء, romanized: al-Masjid al-Jāmiʿ fī Sāmarrāʾ, lit. 'The Congregational Mosque in Samarra') is a mosque from the 9th century CE located in Samarra, Iraq. The mosque was commissioned in 848 and completed in 851 by the Abbasid caliph Al-Mutawakkil who reigned (in Samarra) from 847 until 861. At the time of construction, it was the world's largest mosque. It is known for its 52 metres (171 ft) high minaret encircled by a spiral ramp. The mosque is located within the 15,058-hectare (37,210-acre) Samarra Archaeological City UNESCO World Heritage Site, listed in 2007.