Carrickfergus is a large town in County Antrim, Northern Ireland, known for its historic Carrickfergus Castle, its place in the Irish folk song of the same name, and its location on the north shore of Belfast Lough.

Word news. "Carrickfergus" translates to "Fergus' rock" in Irish.
It's one of the oldest towns in Ireland and County Antrim's oldest town.