I think I remember that Caesar burned Alexandria or part of it. They then moved to a temple called The Serapeum which was burned about 391 AD by Pope Theophilus’s decree. I may have misspelled some of these words and I think there were more instances of burning before the Pope's decree.
The Serapeum which was burned about 391 AD by Pope Theophilus’s decree.
You did spell his name correct. For the record, though, he was a Pope in the Coptic Church of Alexandria.