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
Belfast–Dublin line Belfast–Dublin line The Belfast–Dublin line is a main and busiest railway route on the island of Ireland that connects Dublin Connolly station in the Republic of Ireland and station in Northern Ireland. The railway line was built by three separate companies. In 1837 the Ulster Railway began building a railway line between Belfast and Lisburn, which was extended in stages to Portadown in 1842 and as far as Clones by 1863. The Dublin and Drogheda Railway (D&D) built the line between Dublin and Drogheda. The Dublin and Belfast Junction Railway (D&B Jct) linked the Dublin and Drogheda with the Ulster