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. institutional buildings
9. health and welfare buildings
10. welfare buildings

Anotations

Scope note:

Buildings that house establishments, often charitable institutions, for the reception, housing, and care of pilgrims, travellers, or the needy. The term was originally reserved for the similar establishments of the Knights Hospitallers.