Overview
The Nanjing City Wall, also known as The Nanjing Circumvallation, is a historic defensive fortification located in Nanjing, Jiangsu Province, China. Constructed during the Ming Dynasty in the 14th century, it stands as one of the most significant architectural achievements in Chinese history and represents the pinnacle of ancient Chinese city wall construction. The wall is renowned for its massive scale, sophisticated engineering, and remarkable preservation, making it the longest, largest, and best-preserved ancient city wall in existence today.
History
The construction of the Nanjing City Wall began in 1366 when Zhu Yuanzhang, later to become the Hongwu Emperor and founder of the Ming Dynasty, accepted the advice of his strategist Zhu Sheng to "build high walls" (高筑墙) as part of his strategy to establish a secure capital. At that time, Zhu had just captured Jiqing Road and established Jiangnan Province, renaming it Yingtian Prefecture.
The wall was completed in 1386 after twenty years of construction, forming part of a four-layered defense system that included an outer city, the main city wall, the imperial city, and the palace city. While the imperial and palace city structures have mostly disappeared and only the outer city remains in fragments, the main city wall has survived remarkably intact through centuries of history.
Throughout its history, the wall has undergone numerous modifications, renovations, and name changes. Notable events include:
- In 1461, the Shence Gate (Peace Gate) was rebuilt
- In 1658, after Zheng Chenggong's Northern Expedition failed near this gate, the Qing Dynasty renamed it Desheng Gate (Victory Gate)
- During the Taiping Rebellion in 1853, over 20 meters of the wall near Yifeng Gate were destroyed
- In 1927, following the death of Sun Yat-sen, several gates were renamed in his honor
- During the Japanese occupation in 1937, multiple sections of the wall and several gates were destroyed
- In the 1950s, numerous gates and sections were demolished for urban development
- Since the 1990s, extensive conservation and restoration efforts have been undertaken
Key Information
| Feature | Details |
|---|---|
| Total Length | 35.267 km (21.91 mi) |
| Remaining Length | 25.091 km (15.59 mi) |
| Maximum Height | 26 m (85 ft) |
| Width (Top) | 2.6-19.75 m (8.5-64.8 ft) |
| Number of Crenels | 13,616 |
| Number of Guard Towers | 200 |
| Construction Period | 1366-1386 (Ming Dynasty) |
| Protection Status | National Key Cultural Relics Protection Unit (since 1988) |
| Original Gates | 13 (including Zhongyang Gate, Tongji Gate, Jubaomen (Zhonghua Gate), etc.) |
| Remaining Gates | 5 original gates plus several added later |
Cultural Significance
The Nanjing City Wall represents a remarkable synthesis of military engineering, architectural innovation, and cosmological symbolism. Its design incorporates traditional Chinese astronomical concepts, with the wall's layout symbolizing the celestial constellations of the Southern Dipper (南斗) and the Northern Dipper (北斗). The six gates in the southern section represent the Southern Dipper, while the seven gates in the northern section represent the Northern Dipper, creating a unique urban planning concept that merged heaven and earth.
The wall also features innovative defensive elements, including both outer and inner barbicans (瓮城), with some gates having complex dual-barbican designs that were unprecedented in Chinese architecture. These defensive structures, combined with the wall's massive scale and sophisticated water management systems, demonstrate the advanced military engineering of 14th-century China.
Modern Status
Today, the Nanjing City Wall stands as both a protected historical monument and a significant tourist attraction. Since the 1990s, extensive conservation efforts have been undertaken to preserve and restore sections of the wall. These projects have included repairing damaged sections, reconstructing missing portions, and developing archaeological research to better understand the wall's construction techniques and history.
The wall has also been integrated into modern urban planning, with several sections opened to the public as parks and historical sites. The most notable preserved sections include the Zhonghua Gate (formerly Jubaomen), which features its original triple barbicans and soldier hiding caves, and the Shence Gate (Peace Gate), which retains its unique outer barbican design.
Despite these preservation efforts, significant portions of the wall have been lost over time. In the 1950s, numerous gates and sections were demolished to facilitate urban development, a decision that has been widely criticized by conservationists. More recent decades have seen a reversal of this policy, with increasing recognition of the wall's historical and cultural value.
References
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Chen, J. (2010). The City Wall of Nanjing: A Study in Ming Dynasty Military Architecture. Nanjing University Press.
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Steinhardt, N. S. (1999). Chinese Imperial City Planning. University of Hawaii Press.
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Gernet, J. (1982). A History of Chinese Civilization. Cambridge University Press.
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Nanjing Municipal Bureau of Cultural Relics. (2006). Nanjing City Wall Conservation Report. Nanjing Publishing House.
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Loewe, M., & Shaughnessy, E. L. (Eds.). (1999). The Cambridge History of Ancient China. Cambridge University Press.