☰Sultanahmet

The historic peninsula where Istanbul's imperial past is stacked in layers. Hagia Sophia and the Blue Mosque face each other across a garden, Topkapi Palace sprawls along the promontory above the Bosphorus, and the Hippodrome's ancient spine still marks the center of what was once Constantinople's civic heart. Yes, it's the most touristed spot in the city, but it earned that status — there's simply nowhere else where Roman, Byzantine, and Ottoman histories collide this dramatically. The Basilica Cistern lurks underground, the Archaeological Museum is criminally undervisited, and the backstreets south of Divanyolu still have family-run restaurants charging local prices. Stay a night to experience the district after the tour groups leave, when the minarets light up and the call to prayer echoes across an emptier square.