- Building type: Church
- Date of construction: 1628
- Architect: John Bowden/Joseph Welland/John Guy Ferguson/Thomas Drew (LA)
- Listing: A
- HB/SMR Ref: HB01/19/001
- 2nd Survey by EHS: No
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St. Columb's Cathedral, St. Columb's Court, Derry
County Londonderry
Large and important church with many later additions and alterations. Four stage tower in NW corner, castellated, with tall octagonal spire, corner pinnacles and pointed arch double lancet windows. Main walls are buttressed and castellated with triple lancet windows and half round turret near East gable with domed roof. East face has a large central tracery window with smaller version either side. Cross on gable point and quatrefoil vents near base. Mix of sandstone dressing and past limestone replacement
| Stone Type Category: | Schist |
| Primary Stone Type: | Derry Schist |
| Secondary Stone Type: | Barony Glen Sandstone (Dungiven) |
| Other Stone Type: | Giffnock Sandstone |
| Replacement Stone Type: | Doulting Limestone |
| Stonework Construction: | Coursed rubble |
| Stonework Condition: | Heavy fragmentation of schist, dressing is in reasonably poor condition with heavy granular disintegration, flaking, scaling and face loss |
| Condition Assessment (QUB): | 4 |
