Historic buildings and monuments in Co. Laois
County Laois has 2,216 recorded archaeological monuments in the national Sites and Monuments Record; the 26 buildings below are the county's entries in the National Inventory of Architectural Heritage (NIAH) rated International or National, out of 692 recorded post-1700 structures county-wide.
Monuments to visit
Please note that many of these monuments may be on private land and may not be publicly accessible. When setting out to visit monuments please ensure that you wear appropriate footwear and clothing. Access to monuments without Visitor Services may be across uneven ground which may not be suitable for everyone and, in particular, wheelchair users.
- The Rock of Dunamase is a spectacular natural feature visible in the landscape of Co. Laois. It takes its name from the Irish Dún Másc, meaning the ‘Fort of Masc’.
- Timahoe Round Tower, a monastery was founded here by St Mochua mac Lónáin in the early 7 th century.
NIAH buildings rated International or National
National Inventory of Architectural Heritage entries for Co. Laois, curated to buildings rated International or National.
| Name | Type | Period | Rating |
|---|---|---|---|
| Abbey Leix | country house | 1770–1780 | National |
| Ballinakill Castle | castle/fortified house | 1670–1700 | National |
| Ballyfin House | country house | 1820–1830 | National |
| Ballyfin House | conservatory | 1845–1855 | National |
| Castle Durrow | country house | 1710–1720 | National |
| Church of the Ascension (Lea) | church/chapel | 1880–1885 | National |
| Emo Court | country house | 1785–1795 | National |
| Errill Cross | cross | 1620–1625 | National |
| Fort of Maryborough | fortification | 1550–1580 | National |
| Grennan House | house | 1620–1750 | National |
| Heywood House | building | 1910–1915 | National |
| Midland Regional Hospital Portlaoise | hospital/infirmary | 1930–1940 | National |
| Mount Saint Anne | convent/nunnery | 1810–1830 | National |
| Ó Nuallain | house | 1600–1680 | National |
| Oughaval Church (Stradbally) | mausoleum | 1720–1780 | National |
| Portarlington Railway Station | railway station | 1845–1855 | National |
| Portlaoise Courthouse | court house | 1790–1820 | National |
| Presentation Convent | convent/nunnery | 1820–1840 | National |
| Roundwood House | country house | 1730–1750 | National |
| Saint Fintan's Hospital | hospital/infirmary | 1830–1840 | National |
| Saint John's Church (Coolbanagher) | church/chapel | 1780–1790 | National |
| Saint Mogue's Church (Timogue) | church/chapel | 1735–1740 | National |
| Saint Patrick's Catholic Church | church/chapel | 1835–1845 | National |
| Saint Peter's Church | church/chapel | 1800–1805 | National |
| Stradbally Hall | country house | 1765–1775 | National |
| Summergrove House | house | 1715–1765 | National |
Plan a visit around Co. Laois
NIAH Buildings Open Data, captured June 2026; NMS Monuments to Visit, captured June 2026. Both data.gov.ie, CC-BY 4.0 (Dept of Housing, Local Government and Heritage). See methodology for the curation rule.