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. garden structures

Anotations

Scope note:

Garden structures with open wood-framed roofs, often latticed, supported by regularly spaced posts or columns; often covered by climbing plants such as vines or roses, shading a walk or passageway. Distinguished from "arbors," which are less extensive in extent and structure.