Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Single Built Works (hierarchy name)
5. single built works (built environment)
6. [single built works by specific type]
7. [single built works by form]
8. [single built works by form: massing or shape]
9. towers (single built works)
10. watchtowers

Anotations

Scope note:

In ancient China, stone structures resembling watchtowers which marked the entrance to a building complex. Generally built in pairs, they stand on opposing sides of a road or walkway, and are typically found in front of citadels, palaces, mansions, ancestral temples, and mausoleums.