it is the world's largest palace complex and covers 74 hectares. Surrounded by a 52-meter-wide moat and a 10-meter-high wall are more than 8,700 rooms. The wall has a gate on each side. The distance between the south Meridian Gate (Wumen) and the north Gate of Divine Prowess (Shenwumen) is 961 meters (1,051 yards), while the distance between the east and west gates is 753 meters (823 yards). There are unique and delicately structured towers on each of the four corners of the curtain wall. These afford views over both the palace and the city