The Irish state has officially approved the following list of national monuments in County Roscommon. In the Republic of Ireland, a structure or site may be deemed to be a "national monument", and therefore worthy of state protection, if it is of national importance. If the land adjoining the monument is essential to protect it, this land may also be protected.
Roscommon is the county town and the largest town in County Roscommon in Ireland. It is roughly in the centre of Ireland, near the meeting of the N60, N61 and N63 roads.
Boyle is a town in County Roscommon, Ireland. It is located at the foot of the Curlew Mountains near Lough Key in the north of the county. Carrowkeel Megalithic Cemetery, the Drumanone Dolmen and the lakes of Lough Arrow and Lough Gara are also close by. As of 2016, the population of the town was 2,568.
The Castlestrange stone is located in the grounds of "Castlestrange House" near Athleague in County Roscommon, Ireland. It is a granite boulder decorated with flowing spirals in the La Tène style, dating from the Iron Age period between 300 BC and 100 AD.
Ardcarn or Ardcarne is a civil parish in County Roscommon, Ireland, 8 km north-west of Carrick-on-Shannon.
A national monument in the Republic of Ireland is a structure or site, the preservation of which has been deemed to be of national importance and therefore worthy of state protection. If the land adjoining the monument is essential to protect it, this land may also be protected.
Ardcarn Mound is a mound and ringfort and National Monument located in County Roscommon, Ireland.
