Carrickabraghy Castle

Carrickabraghy Castle stands in the townland of Carrickabraghy on a rocky outcrop at the north-western extremity of the Isle of Doagh, at the head of Pollan Bay, in the north of Inishowen, a peninsula on the north coast of County Donegal, Ireland. The townland and its castle are located in the Parish of Clonmany in the Barony of Inishowen East. Known as 'The Castles', the site is of local historical importance.

Source: Wikipedia