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 condition]

Anotations

Scope note:

Structures, including constructions of any kind that are fabricated of parts joined together, that formerly were used, but are now deserted by former owners, users, or inhabitants. Includes not just buildings, but other structures, for example oil wells, bridges, docks, and railroads.