Caislean na hOireanai- Castle of the Cultivated Place
Greencastle, once the capital of Mourne, is a small hamlet located on the mouth of Carlingford Lough. It is one of the earliest Anglo Norman settlements in Northern Ireland. The castle was built in the 13th century and was maintained as an occupied fortress for 350 years. During that time it was ransacked and repaired several times so that the building we see today is a mixture of 13th - 16th century structures.
The pier at Greencastle is where many inhabitants of the area left in the late 19th and early 20th centuries to emigrate to America and Australia.
The Greencastle Fair was one of the great 3-day fairs of Ireland, where unlike the Puck Fair in Kerry, it was the male sheep and not the male goat, which was enthroned.