Dublin Dublin Dublin (; ) is the capital of, and largest city in, Ireland. It is on the east coast of Ireland, in the province of Leinster, at the mouth of the River Liffey, and is bordered on the south by the low mountains. It has an urban area population of 1,173,179, while the population of the Dublin Region (formerly County Dublin), , was 1,347,359, and the population of the Greater Dublin area was 1,904,806. There is archaeological debate regarding precisely where Dublin was established by Celtic-speaking people in the 7th century AD. Later expanded as a Viking settlement, the Kingdom
R666 road (Ireland) R666 road (Ireland) The R666 road is a regional road in Ireland which runs west-east from the R639 in Fermoy town centre to the bridge over the River Blackwater on the outskirts of Lismore. The road passes through Ballyduff, and beneath the River Blackwater viaduct which carries the M8 motorway. The R666 begins in Fermoy as the Rathhealy Road. From here to its merger with the R667 road 3km south of Kilworth, the R666 was once part of the historic road linking Dublin and Cork. It was mapped as such by Herman Moll in his 1714 "New Map of Ireland".