Overview
Castledermot sits on the banks of the River Lerr, a tributary of the River Barrow, roughly 75 km south-west of Dublin. Once a fortified Norman borough and a key stop on the ancient route to Waterford, the village today offers a compact, self-guided walk through centuries of Irish history. All the main monuments – from a 9th-century monastic foundation to a 10th-century round tower, Viking artefacts, and friary ruins – fit within a roughly one-mile circuit, making it an ideal half-day stop for history enthusiasts and walkers.
What to See
St James’ Churchyard & The Round Tower
The walk naturally begins at St James’ Church of Ireland, which stands on the site of Díseart Diarmada (Dermot’s Hermitage), founded around AD 814. Enter through the reconstructed Romanesque archway to find a graveyard that reads like a stone timeline of Ireland’s early centuries.
Look closely at the grass to find a prehistoric kern stone dating back to the Neolithic period, followed by Ireland’s only Viking hogback burial stone. Uncovered in 1967, the granite slab is carved to resemble the roof of a longhouse, hinting at the Norse settlers who transitioned from raiders to residents after the site was plundered in 841. Nearby, a tall pillar known as the swearing stone features a drilled hole where hands were once clasped to seal oaths on sacred ground.
The churchyard also holds a flat slab marking the heart-burial of Cormac mac Cuilennáin, the learned 10th-century Bishop-King of Munster, who studied at the monastery before his death in battle. Dominating the skyline are two magnificent 10th-century granite high crosses, part of the Barrow Valley group. Carved with biblical scenes including Noah’s Ark and the Feeding of the Five Thousand, they served as outdoor teaching aids for a largely illiterate population. Standing guard behind them is the 10th-century round tower, built of granite field stones and unusual for its ground-level door.
The Franciscan Friary
A short walk along Abbey Street leads to the atmospheric ruins of the Franciscan friary, founded around 1247. The site sits just outside the original medieval town defences and features a nave, choir, and a rare north transept – a layout shared by only two other friaries in Ireland.
Inside the central chapel, visitors can view the only surviving cadaver effigy in County Kildare. Dating to around 1505, the rapidly deteriorating stone slab depicts the skeletal remains of James Tallon and Joan Skelton in low relief, a stark reminder of medieval mortality. The friary’s domestic tower once served a defensive purpose, and excavations in the surrounding area have uncovered medieval burials and a probable vault. Behind the church, a gable wall remains from a chapel burned in 1799, with a holy well dedicated to St James emerging from the base.
Town Walls & St John’s Tower
The secular history of Castledermot is best represented at Carlow Gate, the only upstanding fragment of the pear-shaped town wall completed in 1302. Funded by a murage grant, the walls originally featured three documented gates: Dublingate, Carlowgate, and Tullowgate. The gate once collected tolls from traders entering the French-speaking Norman enclave, beyond which lay the territories of Gaelic clans like the O’Byrnes and O’Tooles.
Nearby, visible from a footpath, stands St John’s Tower (also known as the Pigeon Tower). This square stone structure is the sole remnant of a medieval leper hospital run by the Crutched Friars, who tended to sufferers of leprosy and later the Black Death, which ravaged the town in 1348.
History & Heritage
The name Castledermot reflects a dual past: “Castle” refers to the 13th-century Anglo-Norman fortifications established by Walter de Riddlesford, while “Dermot” honours the early Christian hermitage. The town’s strategic location made it a political hub; on 18 June 1264, the earliest recorded parliament in Ireland convened here.
Castledermot also produced notable figures, including St Laurence O’Toole, the 12th-century Archbishop of Dublin, who was born in the town. Its historical significance extended well into the 20th century, most notably in July 1903 when the Gordon Bennett Cup motor race passed through the village, with competitors navigating the narrow streets just weeks after the event’s inception.
Practical Information
Opening Hours & Admission
All outdoor monuments, including the churchyard, high crosses, round tower, friary ruins, and Carlow Gate, are open to the public year-round. Admission is free.
Getting There
- By Car: Exit the M9 at Junction 4 and travel east for approximately 2 km. Follow signs to the Teach Diarmada car park, located opposite St James’ Church.
- By Bus: JJ Kavanagh route 736 runs daily between Dublin and Waterford, stopping in Castledermot. Kildare Local Link route 880 provides connections to Carlow, Naas, and surrounding villages. South Kildare Community Transport operates a twice-daily service to Athy on weekdays.
- By Train: The nearest railway stations are Carlow (approx. 11 km) and Athy (approx. 14 km).
Accessibility & Facilities
A gravel path leads to the south high cross and Romanesque arch, making that section wheelchair-friendly. The rest of the graveyard is grass-covered and may be difficult for mobility scooters or wheelchairs. The friary entrance is narrow and the interior uneven. Dogs are welcome on a lead throughout the open sites. Free parking is available at the Teach Diarmada car park, and the adjacent community centre offers toilets and a free exhibition on Irish high crosses.
Plan Your Visit
- Footwear: Wear sturdy shoes with good grip, as paths transition between gravel, grass, and uneven stone.
- Timing: Early morning or late afternoon provides the softest light for photographing the high crosses and round tower without harsh shadows.
- Local Amenities: The village square features Gannon’s public house and a butcher’s shop for basic refreshments. For a deeper dive into the local heritage, stop by the Teach Diarmada Community Centre to view their high cross exhibition before starting your walk.