Donegal Castle sits right in the city center of Donegal Town. Fully restored in the early 1990s, the castle consists of a 15th-century rectangular keep with a later Jacobean style wing. You can see in some of the pictures the River Eske. The castle was the stronghold of the O’Donnell clan, Lords of Tír Conaill and one of the most powerful Gaelic families in Ireland from the 5th to the 16th centuries. It was constructed in 1474.
The keep has odd square shaped windows at the top which make this castle quite unique. It also has one of the most spectacular stone fireplaces called the Brooke Fireplace located in the Great Hall.