County Down is one of the six counties of Northern Ireland, one of the nine counties of Ulster and one of the traditional thirty-two counties of Ireland. It covers an area of 961 sq mi (2,490 km2) and has a population of 552,261. It borders County Antrim to the north, the Irish Sea to the east, County Armagh to the west, and County Louth across Carlingford Lough to the southwest.
Mourne Mountains
King John's Castle on Carlingford Lough.
A steam train on the Downpatrick and County Down Railway travelling through the Ulster drumlin belt near Downpatrick.
Northern Ireland is a part of the United Kingdom in the north-east of the island of Ireland that is variously described as a country, province or region. Northern Ireland shares an open border to the south and west with the Republic of Ireland. At the 2021 census, its population was 1,903,175, making up around 3% of the UK's population and 27% of the population on the island of Ireland. The Northern Ireland Assembly, established by the Northern Ireland Act 1998, holds responsibility for a range of devolved policy matters, while other areas are reserved for the UK Government. The government of Northern Ireland cooperates with the government of Ireland in several areas under the terms of the Belfast Agreement. The Republic of Ireland also has a consultative role on non-devolved governmental matters through the British–Irish Governmental Conference (BIIG).
RMS Olympic, sister ship of Titanic, photographed in dry dock, Belfast
Signing of the Ulster Covenant in 1912 in opposition to Home Rule
Crowds in Belfast for the state opening of the Northern Ireland Parliament on 22 June 1921
James Craig (centre) with members of the first government of Northern Ireland