- Building type: Castle
- Date of construction: 1180
- Architect: Not Assigned
- Listing: MON
- HB/SMR Ref: ANT052:059
- 2nd Survey by EHS: No
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Carrickfergus Castle
County Antrim
Situated on a basalt projection from the shore, forming a rough oval in plan. Square central stone keep with an outer and inner ward defended by curtain walls of basalt rubble. Fronted by large gatehouse flanked by 2 rounded towers. Internal buildings and store houses. Many changes of use and development over the centuries
| Stone Type Category: | Basalt |
| Primary Stone Type: | Basalt |
| Secondary Stone Type: | Cultra Limestone |
| Other Stone Type: | Sherwood Sandstone |
| Replacement Stone Type: | Dunhouse Sandstone |
| Stonework Construction: | Coursed rubble |
| Stonework Condition: | Assorted stone types used with variable weathering response. Basalt is in good condition with isolated evidence of greening. Sandstone exhibits some evidence of surface deterioration through granular disintegration. |
| Condition Assessment (QUB): | 2 |
