Linked from
The 11 pages that link to Samarra, each with the reason it gives.
BaghdadRelated: The court’s temporary move there shifted imperial power away from Baghdad.
Abu Bakr al-BaghdadiRelated: Al-Baghdadi was born in Samarra in 1971.
Ali al-HadiBroader topic: The Abbasids compelled Ali al-Hadi to live in this imperial garrison city.
Hasan al-AskariRelated: Hasan lived under close Abbasid supervision in this imperial city.
Al-Mu'tasimBroader topic: Al-Mu'tasim founded it as a new seat of government and military power.