Top Things to Do in Sligo, Republic of Ireland

Ballymote Castle is a formidable medieval fortress located in the small town of Ballymote in County Sligo, in the west of Ireland. It stands as one of the largest and most impressive Anglo-Norman castles in Connacht, and despite centuries of neglect and partial ruin, it remains a powerful and evocative monument to medieval power politics in Ireland. The castle is maintained by the Office of Public Works and is freely accessible to visitors, making it an underappreciated gem for those exploring the heritage-rich landscape of County Sligo. Its sheer scale — unusual for a castle in a relatively quiet rural town — immediately commands attention and sets it apart from many other ruins in the region. The castle was built around 1300 by Richard de Burgh, the "Red Earl" of Ulster, one of the most powerful Anglo-Norman magnates of his era. De Burgh chose the site strategically, as Ballymote sat at an important crossroads in Connacht and served as a base for extending Norman influence into the west of Ireland. The castle is a quadrangular structure with massive drum towers at each corner and a large gatehouse, built entirely of dressed limestone. Unlike many castles of the period, it was constructed without a central keep — the curtain walls and towers were intended to be the primary defensive structures. This design reflects the most advanced military thinking of the early fourteenth century. Throughout its history, Ballymote changed hands many times, reflecting the turbulent nature of medieval Irish politics. After de Burgh's death, it passed through various Irish and Norman hands. By the late fourteenth century, it had fallen into the possession of the MacDonagh family, a branch of the powerful MacDermot clan. The castle became an important stronghold for various Connacht lords across the fifteenth and sixteenth centuries. One of the most historically significant events associated with Ballymote is the composition of the Book of Ballymote, a major medieval Irish manuscript compiled here around 1390–1391. This manuscript is now preserved in the Royal Irish Academy in Dublin and contains genealogies, mythological texts, and crucially, a key to the Ogham alphabet — making it one of the most important documents for understanding early Irish writing. In 1598, the castle was sold by the MacDonaghs to the chieftain Red Hugh O'Donnell for 400 cows. O'Donnell used Ballymote as a strategic base during the Nine Years' War, the great rebellion against Elizabethan English rule. It was from Ballymote that he marched his forces south to join with Hugh O'Neill before the disastrous Battle of Kinsale in 1601, a defeat that effectively ended Gaelic Ireland's last major armed resistance. The castle was subsequently taken by English forces and garrisoned, and it played a minor role in the conflicts of the seventeenth century as well, including a brief period during the 1641 rebellion and the Williamite wars. In person, Ballymote Castle is a strikingly intact ruin. The curtain walls, though roofless and in places reduced to their lower courses, stand to an impressive height across much of the perimeter. The four great drum towers at the corners are the most visually dominant features, rising above the surrounding flat ground and giving the castle a monumental silhouette that is visible from some distance across the town. The gatehouse on the northern side is particularly well-preserved and gives a real sense of the original entrance experience. Inside, the enclosed courtyard is now grassy and open to the sky, creating a tranquil atmosphere that belies the castle's violent history. The local limestone used in the construction weathers to a grey-silver colour and is covered in patches of moss and lichen that add to the ancient atmosphere of the place. The town of Ballymote itself is a modest, friendly market town with some local services including pubs and shops. The surrounding landscape is characteristic of south Sligo — gently rolling drumlins, patchwork farmland, and distant views of the Bricklieve Mountains to the southeast, beneath which lie the remarkable Carrowkeel megalithic passage tomb complex. Knocknarea, the great hill above Strandhill associated with Queen Meabh of Connacht mythology, is visible to the northwest on a clear day. The broader County Sligo area is extraordinarily rich in archaeological and mythological heritage, and Ballymote makes an excellent base or stopping point when exploring Carrowkeel, Lough Arrow, or the wider Sligo heritage trail. Visiting is straightforward and free of charge. The castle sits right in the centre of Ballymote town, immediately accessible from the main street, and is maintained as a public heritage site by the Office of Public Works. There is no visitor centre or interpretive facility on site, so visitors are encouraged to do some background reading beforehand to appreciate the layers of history embedded in the stones. The site is open throughout the year during daylight hours. The ground within the castle is uneven and can be muddy in wet weather, so sturdy footwear is advisable. Ballymote is easily reached by road from Sligo town, approximately 25 kilometres to the north via the N17, and there is also a railway station in Ballymote on the Dublin-to-Sligo line, making it accessible without a car. One of the more unusual and lesser-known facts about Ballymote Castle is its design sophistication — the absence of an internal keep was a deliberate architectural choice that represented cutting-edge military engineering for its time, prioritising active defence over passive refuge. The castle was designed to be manned and fought from, not simply retreated into. This makes it an important example of transitional castle design in Ireland. The association with the Book of Ballymote also gives the site a literary and scholarly significance that goes far beyond its military history: the manuscript compiled within or near these walls helped later scholars decode the Ogham script, the earliest form of writing in Ireland, effectively making Ballymote a place where Irish linguistic heritage was preserved for posterity.