The former capital of the Ottoman Empire was Constantinople, now known as Istanbul, located in modern-day Turkey. This historic city served as the empire's capital from 1453 until its dissolution in the early 20th century. Renowned for its strategic location, bridging Europe and Asia, Constantinople was a center of culture, trade, and politics during the Ottoman period. The city's rich history and architectural marvels, such as the Hagia Sophia and the Topkapi Palace, attract millions of visitors and play a significant role in the history of both Europe and the Middle East.