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. transportation structures
9. transportation buildings
10. road transportation structures

Anotations

Scope note:

Stations, along ancient Roman and Byzantine roads (through the 7th century), spaced generally one day's travel apart and intended as stopping places for overnight stays, initially primarily reserved for imperial parties. For intermediary rest stops along these routes, use "mutationes."