Damer House is that rare thing: an elegant Georgian mansion built inside the walls of a medieval castle. It went up in the early 1720s in the courtyard of Roscrea Castle in County Tipperary, a stone fortress that had stood there since the 1280s. The house is one of Ireland’s best surviving examples of pre-Palladian architecture – a plain, well-proportioned nine-bay front from the moment just before the heavy Palladian style took over – and the sight of it framed by a 13th-century gate tower is the whole reason to come.
One thing to know before you drive: Damer House itself is closed for the whole of 2026 while the Office of Public Works carries out conservation works. The castle, the gardens and the Black Mill stay open (Wednesday to Sunday, €3), so the trip is still worth making, but you won’t get inside the house this year. Check the Heritage Ireland page before setting out.
The castle and the house
The castle came first. A stone motte castle was raised here in the 1280s, with a gate tower, two corner towers and curtain walls; one tower has an octagonal room known as the Duke of Ormond’s Tower. From 1798 it served as a barracks for 350 soldiers, and over the next century and a half it was also a school, a library and a sanatorium.
The house is named for John Damer, the merchant whose family came into the castle in the eighteenth century; local historians credit its building to Joseph Damer around 1722. It has nine bay windows and one room furnished in period style. What lifts it above the ordinary is the carved staircase and stonework inside – the feature visitors remember – though the interior is the part shut for 2026.
Saved from the bulldozer
By 1970 the house was empty and decaying, and Tipperary County Council had a standing plan to demolish it and put up an amenity centre with a swimming pool and car park. It was saved by conservationists – the Irish Georgian Society took it on, with the writer Robert O’Byrne serving as its first resident curator – and a long restoration followed through the 1980s. More recently the OPW completed a three-year, roughly €900,000 overhaul of the castle and house before the current round of works.
The Black Mill and St Crónán’s cross
The restored Black Mill beside the house is where the real early-Christian treasure sits: the original St Crónán’s high cross and pillar stone, moved indoors for protection. If the house is shut, this is the thing to prioritise – Crónán founded the monastery that Roscrea grew around, and the cross is among the better early medieval carvings you’ll see in the midlands. The formal garden, with its central fountain, fills the rest of an hour pleasantly enough.
Around Roscrea
Roscrea is one of the oldest towns in Ireland and wears it well; several monuments are a short walk from the castle gate. The Romanesque west front of St Crónán’s Church and the nearby round tower both survive on Church Street, bisected by the modern road, and the remains of a 15th-century Franciscan friary – bell tower and parts of the nave – stand near the town centre. You can see all three on foot in well under an hour.
Visiting
The site is signposted from the N62, a short walk from the town centre, with free car parking on site (coach parking is about 50m from the entrance). Bus Éireann services stop in Roscrea.
For 2026, admission is €3 and the castle and grounds open Wednesday to Sunday between 19 March and 14 October; Damer House is closed. A lift serves the site, so access is better than the old staircases suggest, but ring ahead on 0505 21850 (roscreaheritage@opw.ie) if you need mobility help. If you can, time it for the first Wednesday of the month, when many OPW sites give free admission to individual visitors.