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

Narrower term/s

• indoor swimming pools (buildings)[+]
  • natatoriums

Anotations

Scope note:

Artificial bodies of water designed for swimming, either sunken into the ground or created by the construction of walls, whether or not the pool is housed within a structure or open to the sky.