If you want to get familiar with the vast history of Alexandria, you must visit this museum. It is a treasure trove of information with a fine collection of artifcats and antiquities from the Pharaonic era to the Hellenistic heyday when the city was ruled by the Ptolemy dynasty. It also has a lot of information on the Byzantine and Islamic periods. You can also find some old map drawings of the initial city of Alexandria, helping visitors understand how much the city has changed over time.
Alexandria National Museum