Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. built work divisions

Anotations

Scope note:

The external areas of buildings, potentially including the façade and other features, but not necessarily restricted to surface features. Often used with cardinal direction references, such as "west front" or "north front." For the vertical arrangements of exterior or interior features, use "elevations (building divisions)."