Subject
- Historic buildings3
- Vernacular architecture3
- Architecture2
- Canals2
- City walls2
- Palaces2
- Buddhist temples1
- Cities and towns1
- Cities and towns, Ancient1
- City planning1
- Climatic changes1
- Fortification1
- Geography1
- Grand Canal (China)1
- Historic sites1
- Moats1
- Population1
- Population geography1
- River engineering1
- Transportation1