Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Open Spaces and Site Elements (hierarchy name )
5. site elements

Narrower term/s

• boundary walls[+]
  • periboloi
  • cloud-like walls
  • nine-dragon walls

Anotations

Scope note:

Walls that project from or are separate from a building; the term is reserved for substantial constructions of masonry, lumber, or another such material. Examples of a freestanding walls could be a wall used as a room divider or a wall used as a privacy fence. For walls used to resist lateral loads, use "retaining walls."