Abū Isḥāq Muḥammad ibn Hārūn ibn Muḥammad ibn Hārūn al-Muhtadī bi-ʾLlāh, better known by his regnal name al-Muhtadī bi-ʾLlāh, was the Caliph of the Abbasid Caliphate from July 869 to June 870, during
Dirham of al-Muhtadi, minted in Wasit in 869
Samarra is a city in central Iraq, which served as the capital of the Abbasid Caliphate from 836 to 892. Founded by the caliph al-Mu'tasim, Samarra was briefly a major metropolis that stretched dozens
The spiral minaret of the Great Mosque of Samarra
Dirham of al-Muntasir minted in Surra Man Ra'a (Samarra) in 861–862
Great mosque of Samarra, built between 848 and 851 by the Abbasid caliph Al-Mutawakkil (largest mosque at the time)
Remains (partly reconstructed) of the Large Serdab or Birka Handasiyya, a sunken hall around a large circular pool, inside the Dār al-Khilāfa palace (around or after 836) built by Al-Mu῾tasim (r. 833–842)