Weizhou Ancient City, also known as Rabbit City or Iron City, is located in Weixian County, Zhangjiakou City, Hebei Province. It was first built in the second year of the Daxiang era of the Northern Zhou Dynasty (580 AD) and rebuilt in the tenth year of the Hongwu era of the Ming Dynasty (1377 AD), covering an area of 1.6 square kilometers. The ancient city has a circumference of over 3800 meters, with city walls 11.5 meters high. It has three city gates: Anding Gate (Jingyang Tower) to the east, Jingxian Gate (Wanshan Tower) to the south, and Qingyuan Gate (Guangyun Tower) to the west. There are also four corner towers, 24 watchtowers, and over 1100 crenellations. Outside the city gates are barbicans and outer walls, and a moat surrounds the city. The ancient city boasts numerous historical sites and scenic spots, with temples, palaces, altars, halls, government offices, towers, and residences scattered throughout. It possesses nine national key cultural relics protection units (Jade Emperor Pavilion, Nan'an Temple Pagoda, Sakyamuni Temple, Zhenwu Temple, Changping Granary, Lingyan Temple, Guandi Temple, Tianqi Temple, and the ancient city wall), all possessing high historical and cultural value, folklore research value, and architectural art value. Weizhou Ancient City is a national historical and cultural city. The existing Weizhou city was built in the fifth year of the Hongwu reign of the Ming Dynasty, with earth excavated and city walls constructed on the original site. In the tenth year of the Hongwu reign, the walls were rebuilt with bricks and stones, forming a "magnificent iron city surpassing all others on the border."