Constantinople is the primary historical setting for Ezio's final main-game story in Assassin's Creed Revelations.
Ezio travels to Constantinople in the early sixteenth century while searching for Altaïr's lost keys and investigating the city's Templar activities. The game presents the city during the reign of Sultan Bayezid II, with Ottoman and Byzantine histories shaping its neighborhoods, factions, and architecture.
The campaign includes districts on both sides of the Bosporus and features landmarks such as Hagia Sophia, the Galata Tower, and Topkapı Palace. Ezio also meets Yusuf Tazim, a leader of the Constantinople Assassins, and develops a relationship with Sofia Sartor.
Rome is the main setting of Brotherhood, Florence is central to the beginning of Assassin's Creed II, and Alexandria is associated especially with Origins. Revelations also includes playable sequences set in Masyaf, where Ezio completes Altaïr's story, but Constantinople remains the principal city of the game. The city's modern name is Istanbul, although the historical setting and game title use Constantinople.