Empereur: From the fourth century until the 14th century there were earthquakes in Alexandria. In the Arab sources alone you have more than 20 mentions of earthquakes which affected the lighthouse.

Likewise, the city's later fall to the Arab conqueror ‘Amr ibn al-ʿĀṣ in 642 C.E. made Islam dominant in Egypt, as it has remained since. Unfortunately, ancient Alexandria's most important ...