Burr Point is considered the easternmost point of mainland Northern Ireland and the Island of Ireland. It is located in the townland of Ballyhalbert on the Ards Peninsula in County Down, at longitude 5.4326ºW, although the monument is at longitude 5.4397ºW. It is a just over a mile (or 2 km) southeast of Ballyhalbert village.
The most easterly point of all Northern Ireland and Ireland is a small rock named Cannon Rock, a rock situated 4.08 kilometres off the Ards Peninsula, at longitude 5.42ºW.
County Down (Irish: Contae an Dúin) 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 km) 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.
In the east of the county is Strangford Lough and the Ards Peninsula. The largest settlement is Bangor, a city on the northeast coast. Three other large towns and cities are on its border: Newry lies on the western border with County Armagh. Lisburn and Belfast lie on the northern border with County Antrim. Down contains the southernmost point of Northern Ireland (Cranfield Point) and the easternmost point of Ireland (Burr Point).
The Ards Peninsula (from Irish Aird Uladh, meaning 'peninsula of the Ulstermen') is a peninsula in County Down, Northern Ireland, on the north-east coast of Ireland. It separates Strangford Lough from the North Channel of the Irish Sea. Towns and villages on the peninsula include Donaghadee, Millisle, Portavogie and Portaferry. The large towns of Newtownards and Bangor are at the mainland edge of the peninsula. Burr Point is the easternmost point on the island of Ireland.