The Xi'an City Wall stands as a proud symbol of China's ancient capital, representing one of the most complete city fortifications surviving from ancient times. Originally built during the Ming Dynasty (1370-1378) on the foundations of the Tang Dynasty imperial city, this impressive structure stretches 13.7 kilometers around the old city center. The wall features 98 watchtowers, 18 gates (including the famous South Gate - Yongning Gate), and a complete defensive system with moat, drawbridges, and archery towers. Visitors can walk or cycle along the wide top of the wall (12-14 meters across), enjoying panoramic views of both ancient and modern Xi'an. The wall's architectural features include the unique circular southwest corner tower (preserving Tang Dynasty style), massive gate complexes with multiple defensive layers, and beautifully restored sections that showcase centuries of Chinese military architecture. Evening visits offer spectacular lighting displays, especially at the South Gate area which hosts cultural performances. The wall has been meticulously maintained through centuries, with recent restorations enhancing accessibility while preserving its historical authenticity. As a UNESCO-listed site and national 5A-level tourist attraction, the Xi'an City Wall provides an unforgettable journey through China's imperial history.