In Assassin's Creed Origins, Alexandria is home to the Great Library.
Alexandria is one of the major cities that Bayek visits during the game's Ptolemaic Egyptian setting. The city was founded by Alexander the Great in 331 BCE and became a major center of scholarship, trade, and Mediterranean culture. Its famous library is represented within the game world as part of Alexandria's intellectual and architectural identity.
Origins takes place in the first century BCE, during the reign of Cleopatra VII and the Roman intervention in Egypt. The game includes historical locations such as the Lighthouse of Alexandria and the Serapeum, although its story combines documented history with fictional characters and events. Siwa, where Bayek begins his journey, is an oasis in the western desert and is not the home of the Great Library. Memphis is another major Egyptian city, but it is a separate location.