- Building type: Castle
- Date of construction: Late Medieval
- Architect: Not Assigned
- Listing: MON
- HB/SMR Ref: TYR017:012
- 2nd Survey by EHS: No
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Harry Avery's Castle, Newtownstewart
County Tyrone
Gatehouse formed by two D-shaped towers, open ruin
| Stone Type Category: | Basalt |
| Primary Stone Type: | Basalt (Tyrone Volcanic Group) |
| Secondary Stone Type: | Local Ordovician Granite |
| Other Stone Type: | Local Dalradian Schist (Tyrone) |
| Replacement Stone Type: | |
| Stonework Construction: | Rough-coursed rubble |
| Stonework Condition: | Despite heavy soiling, stonework is in good condition |
| Condition Assessment (QUB): | 1 |
