Historic buildings and monuments in Co. Louth
County Louth has 2,461 recorded archaeological monuments in the national Sites and Monuments Record; the 18 buildings below are the county's entries in the National Inventory of Architectural Heritage (NIAH) rated International or National, out of 1,347 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 first Cistercian monastery in Ireland founded in 1142 by St Malachy of Armagh, its most unusual feature is the octagonal Lavabo c.
- Located to the south-west of the Cooley Mountains near the lower slopes of Black Mountain, Proleek portal tomb is one of the best-known and most iconic megalithic tombs in Ireland.
NIAH buildings rated International or National
National Inventory of Architectural Heritage entries for Co. Louth, curated to buildings rated International or National.
| Name | Type | Period | Rating |
|---|---|---|---|
| (unnamed record) | school | 1930–1940 | National |
| Athclare Castle | house | 1500–1600 | National |
| Barlow House | building misc | 1730–1735 | National |
| Barmeath Castle | country house | 1750–1790 | National |
| Beaulieu House | country house | 1710–1720 | National |
| Boyne Valley Baptist Church | church/chapel | 1780–1800 | National |
| Boyne Viaduct | bridge | 1850–1860 | National |
| Carstown House | country house | 1610–1615 | National |
| Collon Church | church/chapel | 1810–1815 | National |
| Corn Market | office | 1795–1800 | National |
| Dundalk Courthouse | court house | 1810–1820 | National |
| Dundalk Institute of Technology | college | 1965–1975 | National |
| Rokeby Hall | country house | 1780–1790 | National |
| Saint James's Catholic Church | church/chapel | 1760–1765 | National |
| Saint Peter's Catholic Church | church/chapel | 1790–1795 | National |
| Saint Peter's Church (Saint Peter's) | church/chapel | 1745–1750 | National |
| Townley Hall | country house | 1790–1810 | National |
| Townley Hall | outbuilding | 1785–1805 | National |
Plan a visit around Co. Louth
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.