In Carmous (in the southwest of the city) is a hill littered with the remains of ancient walls, architectural fragments, and rubble on which Alexandria’s only ancient monument is left standing. Pompey’s Pillar rises from the ruins of the ancient and famous Serapeion (Temple of Serapis), which was once used to store the overflow of manuscripts from the Great Library of Alexandria. This column of red Aswan granite with a Corinthian capital, standing on a badly ruined substructure and rising to a height of almost 27 meters, actually has nothing to do with Pompey and was instead set up in AD 292 in honor of Diocletian, who supplied food for the starving population after the siege of the city
