The City Walls of Diyarbakır are a remarkable example of ancient fortifications located in southeastern Turkey. Stretching over 5.5 kilometers, these walls are made primarily of basalt and date back to the Roman period, with significant additions made during the Byzantine and Ottoman eras. They are among the best-preserved city walls in the world and are recognized as a UNESCO World Heritage Site. The walls feature numerous towers and gates, showcasing various architectural styles. They served as a defensive structure for the city throughout its long history, protecting it from invasions. Today, the City Walls of Diyarbakır are a popular tourist attraction, reflecting the rich cultural heritage of the region.