Which city is the primary setting of Assassin's Creed Revelations?

Constantinople is the primary setting of Assassin's Creed Revelations. The game follows Ezio Auditore da Firenze as he travels to the capital of the Byzantine Empire, where he searches for Altaïr Ibn-La'Ahad's seals and becomes involved in the city's political struggle.

The story takes place in the early 16th century, when Constantinople was under Ottoman rule. Ezio works with local Assassins, including Yusuf Tazim, while facing Byzantine Templars led by Manuel Palaiologos. The city's districts, waterways, and landmarks form the main environment for exploration and missions.

Constantinople is the historical name used by the game for the city now commonly called Istanbul. The name Istanbul became the city's official name in the 20th century, long after the period depicted. Revelations also includes sections set in Masyaf and a separate modern-day storyline, but Constantinople remains its central location.