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. agricultural structures
9. agricultural buildings
10. horticultural buildings
11. greenhouses

Additional parents:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment
4. Open Spaces and Site Elements
5. open spaces
6. open spaces by form
7. gardens
8. gardens by product

Anotations

Scope note:

Greenhouses in which ferns are grown; may also be used for gardens or other outdoor areas devoted primarily to ferns. For small containers designed to hold ferns, use "ferneries (planters)" or "terrariums."