Passing beneath a low stone gatehouse with two rounded arches, you step onto a green expanse dotted with leaning gravestones and weathered stone crosses. Rising from the middle of this cemetery is a slender gray round tower, straight as a stylus and capped with a pointed cone, with no doorway at ground level and only a small arched entrance cut several meters up its shaft. Behind it stand the roofless stone walls of ruined churches, and farther up the valley, between two wooded mountain slopes, a dark lake lies still as a pewter mirror.
This is Glendalough, from the Irish Gleann Dá Locha, meaning the Valley of the Two Lakes, the monastic settlement founded by Saint Kevin in the Wicklow Mountains. Ireland has long been called the island of saints and scholars because early Christian life here revolved around monastic communities rather than urban dioceses. Glendalough preserves the layout of such a settlement more completely than almost anywhere else on the island, and according to monastic.ie it ranked among the foremost pilgrimage destinations of medieval Ireland.
ISaint Kevin and Early Irish Monasticism
Saint Kevin, whose Irish name Cóemgen means fair-born or nobly born according to monastic.ie, founded his monastery at Glendalough in the late 6th or early 7th century. According to tradition, he spent his first years living alone as a hermit beside the Upper Lake, a solitude that County Wicklow's heritage records say lasted seven years. Disciples increasingly sought him out, and from that woodland hermitage grew an entire monastic city. He died in 618 or 622.
One point about religious classification deserves clarity. Glendalough belongs to early Irish Christianity, centuries before both the East-West Schism of 1054 and the 16th-century Reformation, making it a shared heritage of all Christians in Ireland. The library places the site under Catholicism because of its historical communion with Rome and because the feast days associated with the valley follow the Catholic liturgical calendar. From the same era of Christian mission in the British Isles, readers may compare Canterbury Cathedral, founded by Saint Augustine in 597 and now the mother church of the Anglican Communion.
Early Irish monks drew inspiration from the Desert Fathers of Egypt, withdrawing from worldly society into remote places to stand alone before God. Because Ireland had no arid desert, mountain glens, dense forests, and rocky Atlantic islands became their desert. Even today the area around the Upper Lake at Glendalough is called Saint Kevin's Desert (Dísert Caoimhghin). The recurring paradox of this ascetic movement was that the farther a holy hermit retreated into solitude, the more followers gathered around him, turning a remote hermitage into a thriving center of learning, manuscript illumination, and pilgrimage hospitality.
After Saint Kevin, the most celebrated figure of the monastery was Saint Laurence O'Toole (Lorcán Ua Tuathail), Abbot of Glendalough, who in 1162 was elected Archbishop of Dublin. He died in 1180 at Eu in Normandy and was canonized in 1225. Glendalough reached its zenith during the 11th and 12th centuries. According to monastic.ie, in 1213 King John granted the bishopric of Glendalough to the Archbishop of Dublin, and after the death of Glendalough's last independent bishop in 1214 the see was subsumed into the Diocese of Dublin in 1214 or 1215, a union confirmed by Pope Innocent III (and subsequently Pope Honorius III) in 1216. From around 1200 onward the monastic settlement gradually declined.
Two points are frequently misunderstood. First, the rock cavity known as Saint Kevin's Bed high on the cliff face above the Upper Lake is traditionally pointed out as the saint's hermitage, yet Heritage Ireland notes that scholars consider it likely to be a prehistoric burial chamber predating him by centuries, and Glendalough Hermitage describes it as a Bronze Age cave. Second, several travel websites refer to Glendalough as a UNESCO World Heritage Site. That is incorrect. Glendalough is a National Monument of Ireland located within a national park, and is not inscribed on the UNESCO World Heritage List.
IIFrom Hermitage to Monastic City
Most of the stone monuments standing at Glendalough today date not from Saint Kevin's lifetime but from the monastery's 11th- and 12th-century heyday, when the settlement was reorganized on a grand scale. The earliest churches of timber and wattle have vanished, leaving the later stone buildings. According to monastic.ie, the valley preserves up to nine Romanesque or earlier churches. As a medieval pilgrimage sanctuary set in dramatic natural scenery, Glendalough invites comparison with Mont-Saint-Michel Abbey off the coast of Normandy, though the two grew out of very different monastic traditions.
- Late 6th centurySaint Kevin founds the monasteryHe lives as a hermit by the Upper Lake before establishing a monastic community. Monastic.ie dates the foundation to around 600 (late 6th or early 7th century). He dies in 618 or 622.
- 11th centuryTrinity ChurchA well-preserved small church near the northeastern approach to the valley, positioned to greet pilgrims arriving from that direction according to the National Monuments Service.
- Around 1100The Round TowerThe approximately 30-meter bell tower is erected around the turn of the 11th and 12th centuries, visible across nearly the entire valley.
- 1150sSaint Saviour's PrioryBuilt for Augustinian canons, the latest church erected at Glendalough, featuring some of the finest Romanesque stone carving in Ireland.
- 1162Saint Laurence O'TooleThe Abbot of Glendalough is elected Archbishop of Dublin. He dies in 1180 and is canonized in 1225.
- 1213 to 1216Merged into the Diocese of DublinThe bishopric of Glendalough is granted to the Archbishop of Dublin in 1213, effectively united in 1214 or 1215, and confirmed by Pope Innocent III in 1216. The monastery declines from around 1200.
- 1862Suppression of the Pattern DayAfter centuries of popular pilgrimage festivities around June 3, the annual Pattern Day is suppressed in 1862 because boisterous secular gatherings had overshadowed religious observance, according to monastic.ie.
- 1875 and 1991State conservation and National ParkThe monuments pass into state guardianship in 1875 under the Office of Public Works (OPW), which reconstructs the round tower's conical cap in 1876. In 1991 Wicklow Mountains National Park is established around the valley.
Regarding the founding date, County Wicklow heritage records and the National Monuments Service state the late 6th century, while monastic.ie writes late 6th or early 7th century (around 600 AD). Regarding the year of Saint Kevin's death, monastic.ie records 618 or 622 without choosing between the two annalistic dates. Regarding the height of the Round Tower, Glendalough Hermitage gives 30 meters while irishhistory.com gives 30.48 meters (exactly 100 feet). The library uses the rounded figure of about 30 meters. The same irishhistory.com page mistakenly calls Glendalough a World Heritage Site, an error the library notes and sets aside.
IIIRound Tower, Stone-Roofed Church, and Monastic Gateway
The archaeological complex stretches for roughly three kilometers along the valley floor. Its heart is the Monastic City near the Lower Lake, entered through a stone gatehouse and containing the Round Tower, the Cathedral, the Priests' House, Saint Kevin's Church, and a graveyard filled with stone crosses. Farther west around the Upper Lake lies Saint Kevin's Desert, with Reefert Church, the foundations of early stone cells, and Saint Kevin's Bed. Saint Saviour's Priory stands apart toward the eastern end of the valley.
Built of local stone with austere simplicity, these structures exemplify early Irish monastic architecture: compact churches, thick battered walls, narrow windows, steeply pitched corbelled stone roofs, and a freestanding round tower serving as both belfry and landmark.
According to the National Monuments Service, this two-arched stone structure is the only surviving early medieval monastic gatehouse in Ireland, marking the boundary of the sacred sanctuary.
Rising about 30 meters in mica-slate and granite, originally divided into six timber-floored stories. Its round-headed granite doorway sits 3.2 meters above the upper base course facing southeast. Its conical roof, destroyed by lightning, was rebuilt in 1876 using the original stones found inside the tower.
Dedicated to Saints Peter and Paul and now roofless, it is one of the largest early medieval churches built in Ireland according to the National Monuments Service.
A small stone-roofed church crowned with a miniature round belfry at its west gable. Popularly nicknamed St. Kevin's Kitchen because the little belfry resembles a kitchen chimney.
A small mid-12th-century Romanesque building inside the cemetery, probably erected as a mortuary shrine to house the relics of Saint Kevin.
Standing west of the main enclosure, thought to have served an early community of nuns outside the men's monastic precinct.
| Feature | Figure | Source |
|---|---|---|
| Round tower height | 30 m | glendaloughhermitage.ie |
| Round tower height | 30.48 m | irishhistory.com |
| Tower doorway | 3.2 m above upper base course, facing southeast | irishhistory.com |
| Churches in the valley | Up to nine | monastic.ie |
| State guardianship | Since 1875 | wicklowheritage |
IVTerrain and Orientation
Early Irish Christianity, like Catholicism today, had no concept of feng shui. Churches at Glendalough follow standard Christian liturgical orientation, with the altar at the east end and the entrance at the west. Choosing this remote valley was an ascetic search for solitude rather than geomantic divination. The paragraphs below present the library's comparative reading through traditional Vietnamese geomancy so readers familiar with that framework can appreciate the landscape's form, and do not appear in any Irish source.
Few sites in the library match textbook East Asian landscape principles as closely at first glance as Glendalough. First is the valley embrace. The narrow glacial trough is flanked by steep wooded mountain ridges on north and south like two embracing arms, corresponding to the classic configuration of Azure Dragon on the left and White Tiger on the right (tả thanh long hữu bạch hổ). The ridges shelter the valley floor from wind, a quality known as tàng phong.
Second is water. Two lakes lie linked along the valley floor before draining eastward. In traditional Vietnamese geomancy, water pausing in natural basins before flowing out is called tụ thủy (gathering water). The Monastic City stands near the Lower Lake where the valley opens out, a position corresponding to the water mouth (thủy khẩu), which classical manuals say should be anchored by a tall vertical marker. The 30-meter Round Tower stands at that exact threshold.
Third is the division between inner and outer. Saint Kevin's hermitage lies deep beside the Upper Lake in the quietest part of the glen, while the public monastic city welcomes pilgrims at the valley entrance, much like traditional Vietnamese mountain temples where a meditation hermitage sits high on the slope above the main public sanctuary below.
VFeast Days of Saint Kevin and Saint Laurence O'Toole
Because Glendalough is now an archaeological ruin without a resident monastic community inside the medieval churches, it does not maintain a daily basilica schedule. The principal dates associated with the valley are the feast days of its saints on the Catholic liturgical calendar in Ireland, reckoned by the Gregorian calendar. The table below lists dates only.
| Date | Calendar | Feast | Description |
|---|---|---|---|
| June 3 | Catholic liturgical calendar, Gregorian | Feast of Saint Kevin | Feast of the monastery's founder, the principal annual commemoration linked with Glendalough and formerly a major regional pilgrimage day. |
| November 14 | Catholic liturgical calendar in Ireland | Feast of Saint Laurence O'Toole | Commemorates the Abbot of Glendalough who became Archbishop of Dublin and died in 1180. |
| Until 1862 | Gregorian, around Saint Kevin's feast | Pattern Day | A popular folk pilgrimage and fair held around June 3 for centuries until its suppression in 1862, according to monastic.ie. |
VILocation And How To Get There
- Address
- Glendalough, Bray, Co. Wicklow, A98 HC80
- Getting there
- Glendalough lies in County Wicklow south of Dublin, inside Wicklow Mountains National Park. The Monastic City stands near the Lower Lake beside the Heritage Ireland Visitor Centre.
- Coordinates
- 53.0106, -6.3271
The monastic site is a protected National Monument containing an active historic graveyard. Visitors are asked to observe the etiquette of a burial ground: stay on marked paths, do not climb on ruined walls or stone crosses, and avoid stepping on graves. Saint Kevin's Bed on the cliff face above the Upper Lake has no safe public access and should only be viewed from across the water. Walking trails between the two lakes can be slippery in wet mountain weather.
Nearby places in the library
VIIContribute To This Page
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?Quick Questions
What is Glendalough
Glendalough, from the Irish Gleann Dá Locha meaning Valley of the Two Lakes, is an early Christian monastic settlement founded by Saint Kevin in the late 6th century in the Wicklow Mountains of Ireland. Its surviving stone monuments include an approximately 30-meter round tower, a ruined cathedral, the stone-roofed Saint Kevin's Church, a medieval gatehouse, and stone crosses.
Who was Saint Kevin of Glendalough
Saint Kevin (Cóemgen in Irish) founded the monastery of Glendalough in the late 6th or early 7th century. According to tradition he lived for seven years as a solitary hermit beside the Upper Lake before disciples gathered around him. He died in 618 or 622, and his feast day is celebrated on June 3.
Is Glendalough a UNESCO World Heritage Site
No. Although some travel guides mistakenly describe it as one, Glendalough is not on the UNESCO World Heritage List. It is a National Monument of Ireland in state care since 1875, managed by the Office of Public Works within Wicklow Mountains National Park (established in 1991).
How tall is the Round Tower at Glendalough
About 30 meters. Glendalough Hermitage gives 30 meters and irishhistory.com records 30.48 meters (100 feet). Built around 1100 of mica-slate and granite with a raised doorway facing southeast, its conical roof was rebuilt in 1876 using the original stones. The National Monuments Service ranks it among the tallest and best-preserved round towers in Ireland.
Which Christian tradition does Glendalough belong to
Glendalough belongs to early Irish Christianity, centuries before both the East-West Schism of 1054 and the 16th-century Reformation, making it a shared heritage of Irish Christians. The library classifies the site under Catholicism because its principal commemorations, the feasts of Saint Kevin on June 3 and Saint Laurence O'Toole on November 14, follow the Catholic liturgical calendar.