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 location or context]
8. [single built works by location: topographical]

Anotations

Scope note:

Structures built on sloping sites, as on the sides of hills or mountains. For architecture built of earth or primarily into the earth, prefer "earthen architecture." For architecture created from caves, prefer "cave architecture."