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 form]
8. [single built works by form: massing or shape]
9. towers (single built works)

Anotations

Scope note:

Circular stone towers which taper toward the top, have a conical stone cap, four to five internal floors, and an entry door high above the ground; common in Ireland, associated with churches, and probably built between the 10th and 12th centuries.