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 function]
8. communications structures
9. communications buildings
10. telecommunications buildings

Anotations

Scope note:

Buildings or parts of buildings housing equipment and personnel for the transmission and receipt of telegraphs, which comprise information relayed by coded signals over a distance, which was at its height from the mid-19th through early 20th centuries.