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. recreation structures
9. water recreation structures

Anotations

Scope note:

Large bath structures filled with hot aerated water, originally made of wood but more frequently constructed with plastic or fiberglass impregnated with resin. Typically used for recreation or physical therapy.