Newpark - Garden and Historic Building Open Afternoon Newpark Demesne Newpark Demesne / Juniper Barn, Co. Sligo Newpark, Ballymote, Co. Sligo 20 August, 2pm - 5pm
Nine Stones to Mount Leinster - Geology & Biodiversity Irish Geological Association Nine Stones Car Park, Co. Carlow Nine Stones, Mount Leinster 21 August, 10:30am - 1pm
North Wall Campshires Walking Tour The Five Lamps Arts Festival La Touche House, Custom House Dock, IFSC, Dublin 1 (Opposite Busáras), Co. Dublin – Dublin City George's Dock, North Wall, Dublin 1 21 August, 4pm - 6pm
Offaly Heritage Centre open Day Offaly Heritage Centre Co. Offaly Bury Quay 18 August, 2pm - 4pm21 August, 11am - 1pm21 August, 2pm - 4pm
Ogham Trail Walk at Craggaunowen Craggaunowen Castle and Crannóg Craggaunowen Castle & Crannóg, Co. Clare Kilmurry 17, 18, 22, 23 August, 11am - 12pm
Old Connaught Graveyard and Medieval Church The Medieval Bray Project Old Connaught Graveyard, Opposite Festine Lente., Co. Wicklow Old Connaught Avenue, Bray, Co. Dublin 17, 23 August, 11am - 2pm
Old Fair Day on the Green Tyrrellspass Tidy Towns The Green, Co. Westmeath Tyrrellspass 17 August, 1pm - 5pm
Old Head Coastguard Rocket Reenactment Walk Lusitania Museum & Old Head Signal Tower Speckled Door, Co. Cork County Old Head, Cork 16 August, 11am - 1:30pm
Old Walls, New Voices The Chapel Co. Cork County Sisters of Mercy Convent, Charleville 16 August, 7pm - 9pm20 August, 2pm - 5pm23 August, 11am - 1pm
Oldcastle Walking Tour Meath County Council Meet at St. Brigid's Church, Co. Meath Church Street, Oldcastle, Co. Meath 21 August, 1pm - 2pm
Open Day at Annes Grove Miniature Castle, Castletownroche Irish Landmark Trust Annes Grove Miniature Castle, Co. Cork County Castletownroche, Co Cork 24 August, 10am - 4pm
Open Day at Batty Langley Lodge, Castletown Irish Landmark Trust Batty Langley Lodge, Co. Kildare Castletown, Co. Kildare 24 August, 10am - 4pm
