According to Absolute Monarchs by John Julius Norwich, there was an attack on Rome in 846 by Arab raiders that was driven off by Pope Leo IV. If Leo had failed, or if someone less competent was in power, could there have been an Islamic Rome? It seems possible if the raiders were allied with Sicily and the Muslim-ruled parts of the southern peninsula. What effect would a conquest of Rome have on Catholic Europe and the Islamic world?
The attack on Rome in our history resulted in a "sack" after sailing "up the Tiber", and the raiders managed to "strip the silver plate from the doors of St. Peters". (Absolute Monarchs, Page 78, Kindle version).
The attack on Rome in our history resulted in a "sack" after sailing "up the Tiber", and the raiders managed to "strip the silver plate from the doors of St. Peters". (Absolute Monarchs, Page 78, Kindle version).