The Topkapi Palace was the primary residence of the Ottoman sultans for over 400 years and is now a museum that showcases the opulence and grandeur of the Ottoman Empire. Visitors can explore the palace's many rooms and courtyards, including the Harem, where the sultan's wives and concubines lived, and the Treasury, which houses some of the empire's most valuable artifacts. The palace also offers stunning views of the Bosphorus and the city skyline.