The OPW have launched an official guide to such sites.
Over 350,000 people visited OPW Gardens and Heritage Sites in a midlands county last year.
Also, Heywood Gardens and Emo Court and Gardens in Laois are featured in the official OPW Visitor Guide to Ireland's Historic Gardens.
In total, 32 garden sites from all across the country are included in the guide.
Historic Sites and Gardens of the OPW received over 15M visitors in 2022.