Beijing city fortifications
- 明清北京城（明清北京城是中国历史上最后两代王朝的都城，由宫城、皇城、内城、外城4道城池组成，包括城墙、城门、瓮城、角楼、敌台、护城河等多道设施，是保存最完整的城市防御体系）
Beijing city fortifications
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abstract:
The Beijing city wall was a series of fortifications built between the early 1400s and 1553. The Inner city wall was 24 km long 20 metres thick at ground level and 12 metres thick at the top.
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WordNet