O’Dowd Castle, which was built in 1207, and became home to the O’Dowd chieftains of Tireragh (the barony of much of West Sligo). The castle was originally built for Oliver McDonnell who came to the area to marry an O’Dowd widow. Located beside Easky pier, much of the original structure of the castle has been lost over time, yet the main body of the castle remains. [ Wikipedia ]