The largest city in Turkey is Istanbul. Historically significant, Istanbul straddles both Europe and Asia, making it a cultural crossroads. Once known as Byzantium and later as Constantinople, it has a rich history marked by the Byzantine and Ottoman Empires. Today, Istanbul is renowned for its stunning architecture, including the Hagia Sophia and the Blue Mosque, as well as a vibrant arts scene and bustling bazaars. The city's unique blend of modernity and tradition continues to attract millions of visitors annually.